About the Number 4131 (four thousand one hundred thirty-one)

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   MathBabbler Number Analyst (MBNA) output:
   =========================================
   4131 is a natural, whole, integer
   4131 is odd
   4131 proper divisors are: 1,3,9,17,27,51,81,153,243,459,1377,
   4131 is deficient (sum of divisors is 2421)
   4131 is unhappy
   4131 is a Harshad number
   4131 is not prime
   4131 has the prime factors: 3*3*3*3*3*17 (sum=32)
   4131 sum of prime factors is: 32
   4131 is a lucky number
   4131 in octal is 010043
   4131 in hexadecimal is 0x1023
   4131 in binary is 1000000100011 (is evil)
   4131 nearest square numbers: -35...94 (4096...4225 [65])
   sqrt(4131) = 64.2729
   ln(4131) = 8.32627
   log(4131) = 3.61606
   4131 reciprocal is .00024207213749697409828128782377
   4131! is inf
   4131 is 1314.94 Pi years
   4131 is 206 score and 11 years
   4131 = 2066^2 - 2065^2 and 2066 + 2065 = 4131

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 10 October 2011