21,347 in words
21,347
twenty-one thousand three hundred forty-seven
21,347 is written twenty-one thousand three hundred forty-seven.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred forty-seventh
- Expanded form
- 20,000 + 1,000 + 300 + 40 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 4 | 40 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 21,347 (2 factors)
- First 10 multiples
- 21,347, 42,694, 64,041, 85,388, 106,735, 128,082, 149,429, 170,776, 192,123, 213,470
- Square
- 21,347 × 21,347 = 455,694,409
- Square root
- ≈ 146.11
- Sum of the digits
- 2 + 1 + 3 + 4 + 7 = 17
- Rounded to the nearest 10
- 21,350
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,346
- Number after
- 21,348
- In binary
101001101100011
Quick check
What number comes just after 21,347?
Show the answer
21,348
Is 21,347 even or odd?
Show the answer
Odd
What is 21,347 + 10?
Show the answer
21,357
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 21,347 in words?
21,347 is written "twenty-one thousand three hundred forty-seven".
Is 21,347 a prime number?
Yes. 21,347 is a prime number: its only factors are 1 and 21,347.
What are the factors of 21,347?
The factors of 21,347 are 1 and 21,347.