23 in Words
How do you write 23 in words?
The number 23 is written twenty three in words. As an ordinal it is twenty third, and on a check you would write Twenty three and 00/100.
Last updated 19 June 2026
Other ways to write it
| Cardinal | twenty three |
|---|---|
| Ordinal | twenty third |
| Currency | twenty three dollars |
| Check format | Twenty three and 00/100 |
How number-to-words spelling works
A cardinal number names a quantity (twenty three), while an ordinal names a position (twenty third). 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 23
- 23 is an odd number.
- It is a prime number.
- Digit sum: 5.
- Roman numerals: XXIII.
- Binary: 10111.
- Hexadecimal: 17.
| Digit | Place |
|---|---|
| 2 | tens |
| 3 | ones |
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Frequently asked questions
How do you write 23 in words?
23 in words is "twenty three".
How do you spell 23?
23 is spelled "twenty three".
How do you write 23 on a check?
On a check, write "Twenty three and 00/100".