21,317 in words
21,317
twenty-one thousand three hundred seventeen
21,317 is written twenty-one thousand three hundred seventeen.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred seventeenth
- Expanded form
- 20,000 + 1,000 + 300 + 10 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 1 | 10 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 21,317 (2 factors)
- First 10 multiples
- 21,317, 42,634, 63,951, 85,268, 106,585, 127,902, 149,219, 170,536, 191,853, 213,170
- Square
- 21,317 × 21,317 = 454,414,489
- Square root
- ≈ 146.00
- Sum of the digits
- 2 + 1 + 3 + 1 + 7 = 14
- Rounded to the nearest 10
- 21,320
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,316
- Number after
- 21,318
- In binary
101001101000101
Quick check
What number comes just after 21,317?
Show the answer
21,318
Is 21,317 even or odd?
Show the answer
Odd
What is 21,317 + 10?
Show the answer
21,327
Practice 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 21,317 in words?
21,317 is written "twenty-one thousand three hundred seventeen".
Is 21,317 a prime number?
Yes. 21,317 is a prime number: its only factors are 1 and 21,317.
What are the factors of 21,317?
The factors of 21,317 are 1 and 21,317.