13131was the smallest palindromic Zuckerman Harshad number that didn't have a nBAB when the Zuckerman Harshad nBAB collection was created on 13 April 2014.MathBabbler Number Analyst (MBNA) output: ========================================= 13131 is a natural, whole, integer 13131 is odd 13131 proper divisors are: 1,3,9,1459,4377, 13131 has 5 proper divisors 13131 is deficient (sum of divisors is 5849; ratio: 0.445434) 13131 is unhappy 13131 is not a Squarefree Number: 9, 13131 is Harshad (Niven) number 13131 is composite (not prime) 13131 has the prime factors: 3*3*1459 (sum=1465) 13131 is undulating 13131 is an octahedral number 13131 is palindromic 13131 is a Zuckerman number 13131 in octal is 031513 13131 in hexadecimal is 0x334b 13131 in binary is 11001101001011 (is evil) 13131 nearest square numbers: -135...94 (12996...13225 [115]) sqrt(13131) = 114.591 ln(13131) = 9.48273 log(13131) = 4.1183 13131 reciprocal is .00007615566217348259843119335922 13131 is 4179.73 Pi years 13131 is 656 score and 11 years 13131 is 6566^2 - 6565^2 and 6566 + 6565 = 13131Observe how the base-10 palindromic number

`is the base-8 palindromic number 31513.`

13131

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 16 April 2014

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