113718621 has 4 divisors (see below), whose sum is σ = 151624832. Its totient is φ = 75812412.

The previous prime is 113718613. The next prime is 113718623. The reversal of 113718621 is 126817311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 113718621 - 2³ = 113718613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113718623) 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, 18953101 + ... + 18953106.

It is an arithmetic number, because the mean of its divisors is an integer number (37906208).

Almost surely, 2^113718621 is an apocalyptic number.

It is an amenable number.

113718621 is a deficient number, since it is larger than the sum of its proper divisors (37906211).

113718621 is an equidigital number, since it uses as much as digits as its factorization.

113718621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37906210.

The product of its digits is 2016, while the sum is 30.

The square root of 113718621 is about 10663.8933321747. The cubic root of 113718621 is about 484.4814963949.

The spelling of 113718621 in words is "one hundred thirteen million, seven hundred eighteen thousand, six hundred twenty-one".