21,371 in words
21,371
twenty-one thousand three hundred seventy-one
21,371 is written twenty-one thousand three hundred seventy-one.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred seventy-first
- Expanded form
- 20,000 + 1,000 + 300 + 70 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 7 | 70 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 7, 43, 71, 301, 497, 3,053 and 21,371 (8 factors)
- First 10 multiples
- 21,371, 42,742, 64,113, 85,484, 106,855, 128,226, 149,597, 170,968, 192,339, 213,710
- Square
- 21,371 × 21,371 = 456,719,641
- Square root
- ≈ 146.19
- Sum of the digits
- 2 + 1 + 3 + 7 + 1 = 14
- Rounded to the nearest 10
- 21,370
- Rounded to the nearest 100
- 21,400
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,370
- Number after
- 21,372
- In binary
101001101111011
Quick check
What number comes just after 21,371?
Show the answer
21,372
Is 21,371 even or odd?
Show the answer
Odd
What is 21,371 + 10?
Show the answer
21,381
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 21,371 in words?
21,371 is written "twenty-one thousand three hundred seventy-one".
Is 21,371 a prime number?
No. 21,371 is a composite number, because it has more than two factors.
What are the factors of 21,371?
The factors of 21,371 are 1, 7, 43, 71, 301, 497, 3,053 and 21,371.