231 in Words
How do you write 231 in words?
The number 231 is written two hundred thirty one in words. As an ordinal it is two hundred thirty first, and on a check you would write Two hundred thirty one and 00/100.
Last updated 19 June 2026
Other ways to write it
| Cardinal | two hundred thirty one |
|---|---|
| Ordinal | two hundred thirty first |
| Currency | two hundred thirty one dollars |
| Check format | Two hundred thirty one and 00/100 |
How number-to-words spelling works
A cardinal number names a quantity (two hundred thirty one), while an ordinal names a position (two hundred thirty first). English hyphenates compound numbers from twenty-one to ninety-nine and groups digits into thousands, millions, and billions.
For house-style rules on spelling out numbers, see the Chicago Manual of Style, or read our guide to spelling numbers in words.
Facts about 231
- 231 is an odd number.
- It is not a prime number.
- Digit sum: 6.
- Roman numerals: CCXXXI.
- Binary: 11100111.
- Hexadecimal: E7.
| Digit | Place |
|---|---|
| 2 | hundreds |
| 3 | tens |
| 1 | ones |
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Frequently asked questions
How do you write 231 in words?
231 in words is "two hundred thirty one".
How do you spell 231?
231 is spelled "two hundred thirty one".
How do you write 231 on a check?
On a check, write "Two hundred thirty one and 00/100".