117131618 has 16 divisors (see below), whose sum is σ = 186648000. Its totient is φ = 54972432.

The previous prime is 117131563. The next prime is 117131621. The reversal of 117131618 is 816131711.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9998 + ... + 18281.

It is an arithmetic number, because the mean of its divisors is an integer number (11665500).

Almost surely, 2^117131618 is an apocalyptic number.

117131618 is a deficient number, since it is larger than the sum of its proper divisors (69516382).

117131618 is a wasteful number, since it uses less digits than its factorization.

117131618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28409.

The product of its digits is 1008, while the sum is 29.

The square root of 117131618 is about 10822.7361605095. The cubic root of 117131618 is about 489.2806576645.

It can be divided in two parts, 11713 and 1618, that added together give a palindrome (13331).

The spelling of 117131618 in words is "one hundred seventeen million, one hundred thirty-one thousand, six hundred eighteen".