118513631 has 8 divisors (see below), whose sum is σ = 119734320. Its totient is φ = 117298368.

The previous prime is 118513607. The next prime is 118513669. The reversal of 118513631 is 136315811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118513631 - 2¹⁰ = 118512607 is a prime.

It is a super-2 number, since 2×118513631² = 28090961465608322, 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 = 118513594 and 118513603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118513601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53300 + ... + 55478.

It is an arithmetic number, because the mean of its divisors is an integer number (14966790).

Almost surely, 2^118513631 is an apocalyptic number.

118513631 is a deficient number, since it is larger than the sum of its proper divisors (1220689).

118513631 is a wasteful number, since it uses less digits than its factorization.

118513631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713.

The product of its digits is 2160, while the sum is 29.

The square root of 118513631 is about 10886.3966031006. The cubic root of 118513631 is about 491.1974475613.

The spelling of 118513631 in words is "one hundred eighteen million, five hundred thirteen thousand, six hundred thirty-one".