231,921 in words
231,921
two hundred thirty-one thousand nine hundred twenty-one
231,921 is written two hundred thirty-one thousand nine hundred twenty-one.
Ways to write it
- As an ordinal
- two hundred thirty-one thousand nine hundred twenty-first
- Expanded form
- 200,000 + 30,000 + 1,000 + 900 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 2 | 200,000 |
| ten thousands | 3 | 30,000 |
| thousands | 1 | 1,000 |
| hundreds | 9 | 900 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 73, 219, 353, 657, 1,059, 3,177, 25,769, 77,307 and 231,921 (12 factors)
- First 10 multiples
- 231,921, 463,842, 695,763, 927,684, 1,159,605, 1,391,526, 1,623,447, 1,855,368, 2,087,289, 2,319,210
- Square
- 231,921 × 231,921 = 53,787,350,241
- Square root
- ≈ 481.58
- Sum of the digits
- 2 + 3 + 1 + 9 + 2 + 1 = 18
- Rounded to the nearest 10
- 231,920
- Rounded to the nearest 100
- 231,900
- Rounded to the nearest 1000
- 232,000
- Number before
- 231,920
- Number after
- 231,922
- In binary
111000100111110001
Quick check
What number comes just after 231,921?
Show the answer
231,922
Is 231,921 even or odd?
Show the answer
Odd
What is 231,921 + 10?
Show the answer
231,931
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
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How do you write 231,921 in words?
231,921 is written "two hundred thirty-one thousand nine hundred twenty-one".
Is 231,921 a prime number?
No. 231,921 is a composite number, because it has more than two factors.
What are the factors of 231,921?
The factors of 231,921 are 1, 3, 9, 73, 219, 353, 657, 1,059, 3,177, 25,769, 77,307 and 231,921.