312 in words
312
three hundred twelve
312 is written three hundred twelve.
Ways to write it
- As an ordinal
- three hundred twelfth
- Roman numeral
- CCCXII
- Expanded form
- 300 + 10 + 2
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 3 | 300 |
| tens | 1 | 10 |
| ones | 2 | 2 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156 and 312 (16 factors)
- First 10 multiples
- 312, 624, 936, 1,248, 1,560, 1,872, 2,184, 2,496, 2,808, 3,120
- Square
- 312 × 312 = 97,344
- Square root
- ≈ 17.66
- Sum of the digits
- 3 + 1 + 2 = 6
- Rounded to the nearest 10
- 310
- Rounded to the nearest 100
- 300
- Number before
- 311
- Number after
- 313
- In binary
100111000
Quick check
What number comes just after 312?
Show the answer
313
Is 312 even or odd?
Show the answer
Even
What is 312 + 10?
Show the answer
322
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 312 in words?
312 is written "three hundred twelve".
Is 312 a prime number?
No. 312 is a composite number, because it has more than two factors.
What are the factors of 312?
The factors of 312 are 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156 and 312.
How do you write 312 in Roman numerals?
312 in Roman numerals is CCCXII.