118123631 has 2 divisors, whose sum is σ = 118123632. Its totient is φ = 118123630.

The previous prime is 118123619. The next prime is 118123651. The reversal of 118123631 is 136321811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118123631 - 2⁶ = 118123567 is a prime.

It is a super-2 number, since 2×118123631² = 27906384401248322, 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 118123631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118123651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59061815 + 59061816.

It is an arithmetic number, because the mean of its divisors is an integer number (59061816).

Almost surely, 2^118123631 is an apocalyptic number.

118123631 is a deficient number, since it is larger than the sum of its proper divisors (1).

118123631 is an equidigital number, since it uses as much as digits as its factorization.

118123631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 118123631 is about 10868.4695794762. The cubic root of 118123631 is about 490.6580510332.

The spelling of 118123631 in words is "one hundred eighteen million, one hundred twenty-three thousand, six hundred thirty-one".