345
Number 345: Properties, Factors, and Mathematical Facts
Short answer
The number 345 is an odd composite number with 8 positive divisors. Its prime factorization is 3 × 5 × 23. It is also a deficient number, which gives it several notable mathematical relationships.
Is 345 prime?
ClassificationCompositeParityOddDivisor count8AbundanceDeficient
What is the prime factorization of 345?
Prime factorization
3 times 5 times 23
What are the divisors of 345?
Divisor count
8
Divisor sum
576
Proper divisor sum
231
- 1
- 3
- 5
- 15
- 23
- 69
- 115
- 345
How is 345 classified?
How is 345 represented in other numeral systems?
Decimal
345
Binary
101011001
Octal
531
Hexadecimal
159
Roman
CCCXLVLearn more →
In words
three hundred forty five
Roots and powers
Square root
18.574176 Approximate
Cube root
7.013579 Approximate
Nearest lower square
324
Nearest higher square
361
Nearest lower cube
343
Nearest higher cube
512
What are the digit properties of 345?
Which numbers are related to 345?
Why these results are true
- 345 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 345
- Is 345 prime?
- No
- What is the prime factorization of 345?
- 3 × 5 × 23
- Is 345 a perfect square?
- No
- What is 345 in binary?
- 101011001
- What is 345 in Roman numerals?
- CCCXLV