118906731 has 32 divisors (see below), whose sum is σ = 191436800. Its totient is φ = 72666720.

The previous prime is 118906727. The next prime is 118906741. The reversal of 118906731 is 137609811.

It is not a de Polignac number, because 118906731 - 2² = 118906727 is a prime.

It is a super-2 number, since 2×118906731² = 28277621354212722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118906741) 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 31 ways as a sum of consecutive naturals, for example, 12165 + ... + 19641.

It is an arithmetic number, because the mean of its divisors is an integer number (5982400).

Almost surely, 2^118906731 is an apocalyptic number.

118906731 is a deficient number, since it is larger than the sum of its proper divisors (72530069).

118906731 is a wasteful number, since it uses less digits than its factorization.

118906731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536 (or 7530 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 118906731 is about 10904.4362990482. The cubic root of 118906731 is about 491.7399354309.

The spelling of 118906731 in words is "one hundred eighteen million, nine hundred six thousand, seven hundred thirty-one".