340 in words
340
three hundred and forty
340 is written three hundred and forty.
Ways to write it
- As an ordinal
- three hundred and fortieth
- Roman numeral
- CCCXL
- Expanded form
- 300 + 40
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 3 | 300 |
| tens | 4 | 40 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170 and 340 (12 factors)
- First 10 multiples
- 340, 680, 1,020, 1,360, 1,700, 2,040, 2,380, 2,720, 3,060, 3,400
- Square
- 340 × 340 = 115,600
- Square root
- ≈ 18.44
- Sum of the digits
- 3 + 4 + 0 = 7
- Rounded to the nearest 10
- 340
- Rounded to the nearest 100
- 300
- Number before
- 339
- Number after
- 341
- In binary
101010100
Quick check
What number comes just after 340?
Show the answer
341
Is 340 even or odd?
Show the answer
Even
What is 340 + 10?
Show the answer
350
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 340 in words?
340 is written "three hundred and forty".
Is 340 a prime number?
No. 340 is a composite number, because it has more than two factors.
What are the factors of 340?
The factors of 340 are 1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170 and 340.
How do you write 340 in Roman numerals?
340 in Roman numerals is CCCXL.