291 in words
291
two hundred and ninety-one
291 is written two hundred and ninety-one.
Ways to write it
- As an ordinal
- two hundred and ninety-first
- Roman numeral
- CCXCI
- Expanded form
- 200 + 90 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 2 | 200 |
| tens | 9 | 90 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 97 and 291 (4 factors)
- First 10 multiples
- 291, 582, 873, 1,164, 1,455, 1,746, 2,037, 2,328, 2,619, 2,910
- Square
- 291 × 291 = 84,681
- Square root
- ≈ 17.06
- Sum of the digits
- 2 + 9 + 1 = 12
- Rounded to the nearest 10
- 290
- Rounded to the nearest 100
- 300
- Number before
- 290
- Number after
- 292
- In binary
100100011
Quick check
What number comes just after 291?
Show the answer
292
Is 291 even or odd?
Show the answer
Odd
What is 291 + 10?
Show the answer
301
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 291 in words?
291 is written "two hundred and ninety-one".
Is 291 a prime number?
No. 291 is a composite number, because it has more than two factors.
What are the factors of 291?
The factors of 291 are 1, 3, 97 and 291.
How do you write 291 in Roman numerals?
291 in Roman numerals is CCXCI.