117131256 has 96 divisors (see below), whose sum is σ = 351112320. Its totient is φ = 34977600.

The previous prime is 117131251. The next prime is 117131279. The reversal of 117131256 is 652131711.

It is a super-2 number, since 2×117131256² = 27439462264275072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117131251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55191 + ... + 57273.

It is an arithmetic number, because the mean of its divisors is an integer number (3657420).

Almost surely, 2^117131256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117131256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175556160).

117131256 is an abundant number, since it is smaller than the sum of its proper divisors (233981064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117131256 is a wasteful number, since it uses less digits than its factorization.

117131256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2170 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 117131256 is about 10822.7194364448. The cubic root of 117131256 is about 489.2801536168.

Adding to 117131256 its reverse (652131711), we get a palindrome (769262967).

The spelling of 117131256 in words is "one hundred seventeen million, one hundred thirty-one thousand, two hundred fifty-six".