117165631 has 6 divisors (see below), whose sum is σ = 128785496. Its totient is φ = 106514100.

The previous prime is 117165623. The next prime is 117165637. The reversal of 117165631 is 136561711.

It is not a de Polignac number, because 117165631 - 2³ = 117165623 is a prime.

It is a super-2 number, since 2×117165631² = 27455570175256322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117165593 and 117165602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117165637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484035 + ... + 484276.

Almost surely, 2^117165631 is an apocalyptic number.

117165631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117165631 is a deficient number, since it is larger than the sum of its proper divisors (11619865).

117165631 is an equidigital number, since it uses as much as digits as its factorization.

117165631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968333 (or 968322 counting only the distinct ones).

The product of its digits is 3780, while the sum is 31.

The square root of 117165631 is about 10824.3074143337. The cubic root of 117165631 is about 489.3280126335.

The spelling of 117165631 in words is "one hundred seventeen million, one hundred sixty-five thousand, six hundred thirty-one".