31 in Roman Numerals

31 in Roman numerals is
XXXI
10 + 10 + 10 + 1 = 31
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The number 31 is written XXXI in Roman numerals. Reading left to right and adding the values gives 10 + 10 + 10 + 1 = 31. Roman numerals use seven letters: I (1), V (5), X (10), L (50), C (100), D (500) and M (1000). A smaller letter before a larger one means subtraction (IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900).

XXXI in names

  • Super Bowl XXXI, played on 26 January 1997. Wikidata

Popes, monarchs, films and Super Bowls whose name carries XXXI. Source: Wikidata, retrieved 11 October 2026.

Nearby & popular values

29 = XXIX30 = XXX32 = XXXII33 = XXXIII
4 = IV9 = IX14 = XIV40 = XL49 = XLIX90 = XC99 = XCIX100 = C500 = D1000 = M1984 = MCMLXXXIV1990 = MCMXC1999 = MCMXCIX2000 = MM2024 = MMXXIV2025 = MMXXV2026 = MMXXVI3999 = MMMCMXCIX

Frequently asked

What is 31 in Roman numerals?

31 in Roman numerals is XXXI.

How is 31 written in Roman numerals?

31 is written XXXI, which breaks down as 10 + 10 + 10 + 1 = 31.

Is there a Roman numeral for zero?

No. The Roman system has no symbol for zero, which is one reason it was eventually replaced for calculation.