U-431

U-431 - 1941 Type VIIC submarine. Article “U-431” in Portuguese Wikipedia has 21.5 points for quality (as of July 1, 2025). The article contains 8 references and 6 sections.

This article has the best quality in Vietnamese Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “U-431”, its content was written by 2 registered users of Portuguese Wikipedia and edited by 67 registered Wikipedia users in all languages.

The article is cited 578 times in Portuguese Wikipedia and cited 4963 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Portuguese): #44426 in October 2023
• Global: #143407 in February 2023

The highest popularity rank from 2008:

• Local (Portuguese): #304157 in May 2015
• Global: #1797953 in August 2024

There are 11 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Vietnamese (vi) U-431 (tàu ngầm Đức)		51.8433
2	Catalan (ca) U-431		31.8427
3	Ukrainian (uk) U-431		29.5711
4	English (en) German submarine U-431		28.33
5	Arabic (ar) الغواصة الألمانية يو-431		22.4334
6	Portuguese (pt) U-431		21.4545
7	French (fr) Unterseeboot 431		13.1269
8	Italian (it) U-431		11.8741
9	Slovenian (sl) U-431		6.8947
10	Persian (fa) زیردریایی یو-۴۳۱		1.2414

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "U-431" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) German submarine U-431		21 810
2	Dutch (nl) U 431 (Kriegsmarine)		3 618
3	Italian (it) U-431		3 327
4	French (fr) Unterseeboot 431		2 030
5	Portuguese (pt) U-431		1 353
6	Slovenian (sl) U-431		970
7	Ukrainian (uk) U-431		488
8	Persian (fa) زیردریایی یو-۴۳۱		409
9	Arabic (ar) الغواصة الألمانية يو-431		357
10	Catalan (ca) U-431		257

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "U-431" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) German submarine U-431		118
2	Italian (it) U-431		14
3	Catalan (ca) U-431		8
4	French (fr) Unterseeboot 431		8
5	Vietnamese (vi) U-431 (tàu ngầm Đức)		6
6	Portuguese (pt) U-431		5
7	Dutch (nl) U 431 (Kriegsmarine)		4
8	Slovenian (sl) U-431		4
9	Ukrainian (uk) U-431		3
10	Arabic (ar) الغواصة الألمانية يو-431		2

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "U-431" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) German submarine U-431		23
2	French (fr) Unterseeboot 431		12
3	Ukrainian (uk) U-431		8
4	Italian (it) U-431		7
5	Dutch (nl) U 431 (Kriegsmarine)		6
6	Persian (fa) زیردریایی یو-۴۳۱		3
7	Catalan (ca) U-431		2
8	Portuguese (pt) U-431		2
9	Slovenian (sl) U-431		2
10	Arabic (ar) الغواصة الألمانية يو-431		1

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "U-431" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Vietnamese (vi) U-431 (tàu ngầm Đức)		1
2	Arabic (ar) الغواصة الألمانية يو-431		0
3	Catalan (ca) U-431		0
4	English (en) German submarine U-431		0
5	Persian (fa) زیردریایی یو-۴۳۱		0
6	French (fr) Unterseeboot 431		0
7	Italian (it) U-431		0
8	Dutch (nl) U 431 (Kriegsmarine)		0
9	Portuguese (pt) U-431		0
10	Slovenian (sl) U-431		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "U-431" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	Arabic (ar) الغواصة الألمانية يو-431		1 152
2	English (en) German submarine U-431		793
3	French (fr) Unterseeboot 431		721
4	Ukrainian (uk) U-431		662
5	Slovenian (sl) U-431		586
6	Portuguese (pt) U-431		578
7	Vietnamese (vi) U-431 (tàu ngầm Đức)		357
8	Catalan (ca) U-431		43
9	Italian (it) U-431		36
10	Persian (fa) زیردریایی یو-۴۳۱		27

More...

#	Language	Value
ar	Arabic الغواصة الألمانية يو-431
ca	Catalan U-431
en	English German submarine U-431
fa	Persian زیردریایی یو-۴۳۱
fr	French Unterseeboot 431
it	Italian U-431
nl	Dutch U 431 (Kriegsmarine)
pt	Portuguese U-431
sl	Slovenian U-431
uk	Ukrainian U-431
vi	Vietnamese U-431 (tàu ngầm Đức)

Best Rank

Portuguese: #304157 05.2015

Global: #1797953 08.2024

Best Rank

Portuguese: #44426 10.2023

Global: #143407 02.2023

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information