117902331 has 16 divisors (see below), whose sum is σ = 180305920. Its totient is φ = 76065480.

The previous prime is 117902303. The next prime is 117902363. The reversal of 117902331 is 133209711.

It is not a de Polignac number, because 117902331 - 2⁵ = 117902299 is a prime.

It is a super-2 number, since 2×117902331² = 27801919310467122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 117902295 and 117902304.

It is not an unprimeable number, because it can be changed into a prime (117902131) 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, 69595 + ... + 71268.

It is an arithmetic number, because the mean of its divisors is an integer number (11269120).

Almost surely, 2^117902331 is an apocalyptic number.

117902331 is a deficient number, since it is larger than the sum of its proper divisors (62403589).

117902331 is a wasteful number, since it uses less digits than its factorization.

117902331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140903 (or 140897 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 117902331 is about 10858.2839804455. The cubic root of 117902331 is about 490.3514499327.

The spelling of 117902331 in words is "one hundred seventeen million, nine hundred two thousand, three hundred thirty-one".