117165531 has 16 divisors (see below), whose sum is σ = 178836224. Its totient is φ = 66839904.

The previous prime is 117165527. The next prime is 117165589. The reversal of 117165531 is 135561711.

It is not a de Polignac number, because 117165531 - 2² = 117165527 is a prime.

It is a super-2 number, since 2×117165531² = 27455523309023922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117165131) 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, 9165 + ... + 17841.

It is an arithmetic number, because the mean of its divisors is an integer number (11177264).

Almost surely, 2^117165531 is an apocalyptic number.

117165531 is a deficient number, since it is larger than the sum of its proper divisors (61670693).

117165531 is an equidigital number, since it uses as much as digits as its factorization.

117165531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9330.

The product of its digits is 3150, while the sum is 30.

The square root of 117165531 is about 10824.3027950996. The cubic root of 117165531 is about 489.3278734209.

The spelling of 117165531 in words is "one hundred seventeen million, one hundred sixty-five thousand, five hundred thirty-one".