118238631 has 8 divisors (see below), whose sum is σ = 180173184. Its totient is φ = 67564920.

The previous prime is 118238623. The next prime is 118238639. The reversal of 118238631 is 136832811.

It is an interprime number because it is at equal distance from previous prime (118238623) and next prime (118238639).

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

It is not a de Polignac number, because 118238631 - 2³ = 118238623 is a prime.

It is a super-2 number, since 2×118238631² = 27960747721508322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 118238592 and 118238601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118238639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2815185 + ... + 2815226.

It is an arithmetic number, because the mean of its divisors is an integer number (22521648).

Almost surely, 2^118238631 is an apocalyptic number.

118238631 is a deficient number, since it is larger than the sum of its proper divisors (61934553).

118238631 is an equidigital number, since it uses as much as digits as its factorization.

118238631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630421.

The product of its digits is 6912, while the sum is 33.

The square root of 118238631 is about 10873.7588257235. The cubic root of 118238631 is about 490.8172271272.

The spelling of 118238631 in words is "one hundred eighteen million, two hundred thirty-eight thousand, six hundred thirty-one".