291
Number 291: Properties, Factors, and Mathematical Facts
Short answer
The number 291 is an odd composite number with 4 positive divisors. Its prime factorization is 3 × 97. It is also a deficient number, which gives it several notable mathematical relationships.
Is 291 prime?
ClassificationCompositeParityOddDivisor count4AbundanceDeficient
What is the prime factorization of 291?
Prime factorization
3 times 97
What are the divisors of 291?
Divisor count
4
Divisor sum
392
Proper divisor sum
101
- 1
- 3
- 97
- 291
How is 291 classified?
How is 291 represented in other numeral systems?
Decimal
291
Binary
100100011
Octal
443
Hexadecimal
123
Roman
CCXCILearn more →
In words
two hundred ninety one
Roots and powers
Square root
17.058722 Approximate
Cube root
6.626705 Approximate
Nearest lower square
289
Nearest higher square
324
Nearest lower cube
216
Nearest higher cube
343
What are the digit properties of 291?
Which numbers are related to 291?
Why these results are true
- 291 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 291
- Is 291 prime?
- No
- What is the prime factorization of 291?
- 3 × 97
- Is 291 a perfect square?
- No
- What is 291 in binary?
- 100100011
- What is 291 in Roman numerals?
- CCXCI