About the Number 131 (one hundred thirty-one)

This nBAB for the number 131 was created because 131, at the time, was the smallest number without a nBAB.

   MathBabbler Number Analyst (MBNA) output:
   =========================================
   131 is a natural, whole, integer
   131 is odd
   131 proper divisors are: 1,
   131 is deficient (sum of divisors is 1)
   131 is unhappy
   131 is not a Harshad number
   131 is prime
   ...Cousin prime with 127
   ...Sexy prime with 137
   ...Sophie Germain prime with 263
   ...OEIS:002145 (4n+3; n=32)
   ...Left-truncatable
   ...Right-truncatable
   ...Eisenstein
   131 is undulating
   131 is palindromic
   131 is the sum of 3 consecutive primes
       41 + 43 + 47
   131 in octal is 0203
   131 in hexadecimal is 0x83
   131 in binary is 10000011 (is odious)
   131 nearest square numbers: -10...13 (121...144 [12])
   sqrt(131) = 11.4455
   ln(131) = 4.8752
   log(131) = 2.11727
   131 reciprocal is .00763358778625954198473282442748
   131! is 8.47158e+221
   131 is 41.6986 Pi years
   131 is 6 score and 11 years
   131 written as a Roman numeral is CXXXI

131 is a triple-X Roman numeral.

[NumDic.com] 131 is the difference of two squares (66^2 - 65^2).


Creator: Gerald Thurman [gthurman@gmail.com]
Created: 07 December 2009

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This work is licensed under a Creative Commons Attribution 3.0 United States License.