113644013 has 4 divisors (see below), whose sum is σ = 129878880. Its totient is φ = 97409148.

The previous prime is 113644007. The next prime is 113644033. The reversal of 113644013 is 310446311.

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 a cyclic number.

It is not a de Polignac number, because 113644013 - 2¹⁰ = 113642989 is a prime.

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 113644013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113644033) 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, 8117423 + ... + 8117436.

It is an arithmetic number, because the mean of its divisors is an integer number (32469720).

Almost surely, 2^113644013 is an apocalyptic number.

It is an amenable number.

113644013 is a deficient number, since it is larger than the sum of its proper divisors (16234867).

113644013 is an equidigital number, since it uses as much as digits as its factorization.

113644013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16234866.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 113644013 is about 10660.3945987004. The cubic root of 113644013 is about 484.3755210705.

The spelling of 113644013 in words is "one hundred thirteen million, six hundred forty-four thousand, thirteen".