118500631 has 4 divisors (see below), whose sum is σ = 122323264. Its totient is φ = 114678000.

The previous prime is 118500611. The next prime is 118500643. The reversal of 118500631 is 136005811.

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-118500631 is a prime.

It is a super-2 number, since 2×118500631² = 28084799094796322, 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 = 118500596 and 118500605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118500611) 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, 1911270 + ... + 1911331.

It is an arithmetic number, because the mean of its divisors is an integer number (30580816).

Almost surely, 2^118500631 is an apocalyptic number.

118500631 is a deficient number, since it is larger than the sum of its proper divisors (3822633).

118500631 is an equidigital number, since it uses as much as digits as its factorization.

118500631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822632.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 118500631 is about 10885.7995112899. The cubic root of 118500631 is about 491.1794867573.

The spelling of 118500631 in words is "one hundred eighteen million, five hundred thousand, six hundred thirty-one".