23 in words
23
twenty-three
23 is written twenty-three.
Ways to write it
- As an ordinal
- twenty-third
- Roman numeral
- XXIII
- Expanded form
- 20 + 3
Place value
| Place | Digit | Value |
|---|---|---|
| tens | 2 | 20 |
| ones | 3 | 3 |
Number facts
Quick check
What number comes just after 23?
Show the answer
24
Is 23 even or odd?
Show the answer
Odd
What is 23 + 10?
Show the answer
33
Practise with a game
Place Value Quest
Ones, tens, hundreds and thousands.
Times Tables Challenge
Practise any times table from 2× to 12×.Frequently asked questions
How do you write 23 in words?
23 is written "twenty-three".
Is 23 a prime number?
Yes. 23 is a prime number: its only factors are 1 and 23.
What are the factors of 23?
The factors of 23 are 1 and 23.
How do you write 23 in Roman numerals?
23 in Roman numerals is XXIII.