The Natural Number 391

List of Numbers
    Previous: 390
    Next: 392

Contact Us

Properties of the Number 391

  • Because 391 is not divisible by 2 ...
    • 391 is an odd number
    • 391 has parity 1
    • 391 is not an even number
  • Because 391 can be factored as 17 x 23 ...
    • 391 is a composite number
    • 391 is not a prime number

Alternative Representations of the Number 391

  • Base 2 (binary): 110000111
  • Base 8 (octal): 607
  • Base 16 (hexadecimal): 187
  • Roman numeral: CCCXCI
  • Words: three hundred ninety-one

Divisors of the Number 391

  • 391 has 4 positive divisors: 1, 17, 23, 391
    • The sum of the positive divisors is 432
  • 391 has 3 proper divisors: 1, 17, 23
    • The sum of the proper divisors is 41
  • 391 is a deficient number since the sum of the proper divisors is less than 391
  • 391 is not a perfect number
  • 391 is not an abundant number

More Properties of the Number 391

  • 391 is not a square number
  • 391 is not a cube number
  • 391 is not a palindromic number
  • 391 is not a Fibonacci number
  • 391 is not a Lucas number

6:53 am, Tuesday, May 23, 2017 (UTC; +0000)
Copyright © 2017 D. A. Resler.  All rights reserved.