118380631 has 4 divisors (see below), whose sum is σ = 119879200. Its totient is φ = 116882064.

The previous prime is 118380617. The next prime is 118380671. The reversal of 118380631 is 136083811.

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-118380631 is a prime.

It is a super-2 number, since 2×118380631² = 28027947591916322, 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 = 118380593 and 118380602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118380671) 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, 749166 + ... + 749323.

It is an arithmetic number, because the mean of its divisors is an integer number (29969800).

Almost surely, 2^118380631 is an apocalyptic number.

118380631 is a deficient number, since it is larger than the sum of its proper divisors (1498569).

118380631 is an equidigital number, since it uses as much as digits as its factorization.

118380631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498568.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 118380631 is about 10880.2863473348. The cubic root of 118380631 is about 491.0136326604.

The spelling of 118380631 in words is "one hundred eighteen million, three hundred eighty thousand, six hundred thirty-one".