131 in words
131
one hundred thirty-one
131 is written one hundred thirty-one.
Ways to write it
- As an ordinal
- one hundred thirty-first
- Roman numeral
- CXXXI
- Expanded form
- 100 + 30 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 1 | 100 |
| tens | 3 | 30 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 131 (2 factors)
- First 10 multiples
- 131, 262, 393, 524, 655, 786, 917, 1,048, 1,179, 1,310
- Square
- 131 × 131 = 17,161
- Square root
- ≈ 11.45
- Sum of the digits
- 1 + 3 + 1 = 5
- Rounded to the nearest 10
- 130
- Rounded to the nearest 100
- 100
- Number before
- 130
- Number after
- 132
- In binary
10000011
Quick check
What number comes just after 131?
Show the answer
132
Is 131 even or odd?
Show the answer
Odd
What is 131 + 10?
Show the answer
141
Practice with a game
Times Tables Challenge
Practice any times table from 2× to 12×.
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.Frequently asked questions
How do you write 131 in words?
131 is written "one hundred thirty-one".
Is 131 a prime number?
Yes. 131 is a prime number: its only factors are 1 and 131.
What are the factors of 131?
The factors of 131 are 1 and 131.
How do you write 131 in Roman numerals?
131 in Roman numerals is CXXXI.