118290131 has 4 divisors (see below), whose sum is σ = 125248392. Its totient is φ = 111331872.

The previous prime is 118290121. The next prime is 118290157. The reversal of 118290131 is 131092811.

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

It is a cyclic number.

It is not a de Polignac number, because 118290131 - 2²⁶ = 51181267 is a prime.

It is a super-2 number, since 2×118290131² = 27985110183994322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118290131.

It is not an unprimeable number, because it can be changed into a prime (118290121) 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, 3479105 + ... + 3479138.

It is an arithmetic number, because the mean of its divisors is an integer number (31312098).

Almost surely, 2^118290131 is an apocalyptic number.

118290131 is a deficient number, since it is larger than the sum of its proper divisors (6958261).

118290131 is an equidigital number, since it uses as much as digits as its factorization.

118290131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958260.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 118290131 is about 10876.1266542828. The cubic root of 118290131 is about 490.8884768758. Note that the first 3 decimals are identical.

The spelling of 118290131 in words is "one hundred eighteen million, two hundred ninety thousand, one hundred thirty-one".