31,421 in words
31,421
thirty-one thousand four hundred and twenty-one
31,421 is written thirty-one thousand four hundred and twenty-one.
Ways to write it
- As an ordinal
- thirty-one thousand four hundred and twenty-first
- Expanded form
- 30,000 + 1,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 3 | 30,000 |
| thousands | 1 | 1,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 13, 2,417 and 31,421 (4 factors)
- First 10 multiples
- 31,421, 62,842, 94,263, 1,25,684, 1,57,105, 1,88,526, 2,19,947, 2,51,368, 2,82,789, 3,14,210
- Square
- 31,421 × 31,421 = 98,72,79,241
- Square root
- ≈ 177.26
- Sum of the digits
- 3 + 1 + 4 + 2 + 1 = 11
- Rounded to the nearest 10
- 31,420
- Rounded to the nearest 100
- 31,400
- Rounded to the nearest 1000
- 31,000
- Number before
- 31,420
- Number after
- 31,422
- In binary
111101010111101
Quick check
What number comes just after 31,421?
Show the answer
31,422
Is 31,421 even or odd?
Show the answer
Odd
What is 31,421 + 10?
Show the answer
31,431
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 31,421 in words?
31,421 is written "thirty-one thousand four hundred and twenty-one".
Is 31,421 a prime number?
No. 31,421 is a composite number, because it has more than two factors.
What are the factors of 31,421?
The factors of 31,421 are 1, 13, 2,417 and 31,421.