117568731 has 16 divisors (see below), whose sum is σ = 180147968. Its totient is φ = 66808800.

The previous prime is 117568729. The next prime is 117568739. The reversal of 117568731 is 137865711.

It is not a de Polignac number, because 117568731 - 2¹ = 117568729 is a prime.

It is a super-2 number, since 2×117568731² = 27644813017900722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117568731.

It is not an unprimeable number, because it can be changed into a prime (117568739) 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, 11665 + ... + 19266.

It is an arithmetic number, because the mean of its divisors is an integer number (11259248).

Almost surely, 2^117568731 is an apocalyptic number.

117568731 is a deficient number, since it is larger than the sum of its proper divisors (62579237).

117568731 is a wasteful number, since it uses less digits than its factorization.

117568731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31122.

The product of its digits is 35280, while the sum is 39.

The square root of 117568731 is about 10842.9115554818. The cubic root of 117568731 is about 489.8885363569. Note that the first 3 decimals are identical.

The spelling of 117568731 in words is "one hundred seventeen million, five hundred sixty-eight thousand, seven hundred thirty-one".