118196831 has 4 divisors (see below), whose sum is σ = 122009664. Its totient is φ = 114384000.

The previous prime is 118196807. The next prime is 118196849. The reversal of 118196831 is 138691811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118196831 is a prime.

It is a super-2 number, since 2×118196831² = 27940981716885122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118136831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906370 + ... + 1906431.

It is an arithmetic number, because the mean of its divisors is an integer number (30502416).

Almost surely, 2^118196831 is an apocalyptic number.

118196831 is a deficient number, since it is larger than the sum of its proper divisors (3812833).

118196831 is an equidigital number, since it uses as much as digits as its factorization.

118196831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812832.

The product of its digits is 10368, while the sum is 38.

The square root of 118196831 is about 10871.8365973740. The cubic root of 118196831 is about 490.7593820219.

The spelling of 118196831 in words is "one hundred eighteen million, one hundred ninety-six thousand, eight hundred thirty-one".