8,31,720 in words
8,31,720
eight lakh thirty-one thousand seven hundred and twenty
8,31,720 is written eight lakh thirty-one thousand seven hundred and twenty.
Ways to write it
- International system
- eight hundred and thirty-one thousand seven hundred and twenty
- Indian system
- eight lakh thirty-one thousand seven hundred and twenty
- As an ordinal
- eight lakh thirty-one thousand seven hundred and twentieth
- Expanded form
- 8,00,000 + 30,000 + 1,000 + 700 + 20
Place value
| Place | Digit | Value |
|---|---|---|
| lakhs | 8 | 8,00,000 |
| ten thousands | 3 | 30,000 |
| thousands | 1 | 1,000 |
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 64 factors: too many to list
- First 10 multiples
- 8,31,720, 16,63,440, 24,95,160, 33,26,880, 41,58,600, 49,90,320, 58,22,040, 66,53,760, 74,85,480, 83,17,200
- Square
- 8,31,720 × 8,31,720 = 6,91,75,81,58,400
- Square root
- ≈ 911.99
- Sum of the digits
- 8 + 3 + 1 + 7 + 2 + 0 = 21
- Rounded to the nearest 10
- 8,31,720
- Rounded to the nearest 100
- 8,31,700
- Rounded to the nearest 1000
- 8,32,000
- Number before
- 8,31,719
- Number after
- 8,31,721
- In binary
11001011000011101000
Quick check
What number comes just after 8,31,720?
Show the answer
8,31,721
Is 8,31,720 even or odd?
Show the answer
Even
What is 8,31,720 + 10?
Show the answer
8,31,730
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 8,31,720 in words?
8,31,720 is written "eight lakh thirty-one thousand seven hundred and twenty".
Is 8,31,720 a prime number?
No. 8,31,720 is a composite number, because it has more than two factors.