117523131 has 16 divisors (see below), whose sum is σ = 171217920. Its totient is φ = 71111520.

The previous prime is 117523117. The next prime is 117523157. The reversal of 117523131 is 131325711.

It is a happy number.

It is not a de Polignac number, because 117523131 - 2¹¹ = 117521083 is a prime.

It is a super-2 number, since 2×117523131² = 27623372640086322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117523181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20886 + ... + 25908.

It is an arithmetic number, because the mean of its divisors is an integer number (10701120).

Almost surely, 2^117523131 is an apocalyptic number.

117523131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117523131 is a deficient number, since it is larger than the sum of its proper divisors (53694789).

117523131 is a wasteful number, since it uses less digits than its factorization.

117523131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5746.

The product of its digits is 630, while the sum is 24.

The square root of 117523131 is about 10840.8085953032. The cubic root of 117523131 is about 489.8251923997.

Adding to 117523131 its reverse (131325711), we get a palindrome (248848842).

The spelling of 117523131 in words is "one hundred seventeen million, five hundred twenty-three thousand, one hundred thirty-one".