231,840 in words
231,840
two hundred thirty-one thousand eight hundred forty
231,840 is written two hundred thirty-one thousand eight hundred forty.
Ways to write it
- As an ordinal
- two hundred thirty-one thousand eight hundred fortieth
- Expanded form
- 200,000 + 30,000 + 1,000 + 800 + 40
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 2 | 200,000 |
| ten thousands | 3 | 30,000 |
| thousands | 1 | 1,000 |
| hundreds | 8 | 800 |
| tens | 4 | 40 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 144 factors: too many to list
- First 10 multiples
- 231,840, 463,680, 695,520, 927,360, 1,159,200, 1,391,040, 1,622,880, 1,854,720, 2,086,560, 2,318,400
- Square
- 231,840 × 231,840 = 53,749,785,600
- Square root
- ≈ 481.50
- Sum of the digits
- 2 + 3 + 1 + 8 + 4 + 0 = 18
- Rounded to the nearest 10
- 231,840
- Rounded to the nearest 100
- 231,800
- Rounded to the nearest 1000
- 232,000
- Number before
- 231,839
- Number after
- 231,841
- In binary
111000100110100000
Quick check
What number comes just after 231,840?
Show the answer
231,841
Is 231,840 even or odd?
Show the answer
Even
What is 231,840 + 10?
Show the answer
231,850
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 231,840 in words?
231,840 is written "two hundred thirty-one thousand eight hundred forty".
Is 231,840 a prime number?
No. 231,840 is a composite number, because it has more than two factors.