113231112013 has 4 divisors (see below), whose sum is σ = 113308089088. Its totient is φ = 113154134940.

The previous prime is 113231111989. The next prime is 113231112017. The reversal of 113231112013 is 310211132311.

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 a de Polignac number, because none of the positive numbers 2^k-113231112013 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 (113231112017) 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, 38486331 + ... + 38489272.

It is an arithmetic number, because the mean of its divisors is an integer number (28327022272).

Almost surely, 2^113231112013 is an apocalyptic number.

It is an amenable number.

113231112013 is a deficient number, since it is larger than the sum of its proper divisors (76977075).

113231112013 is an equidigital number, since it uses as much as digits as its factorization.

113231112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76977074.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 113231112013 its reverse (310211132311), we get a palindrome (423442244324).

The spelling of 113231112013 in words is "one hundred thirteen billion, two hundred thirty-one million, one hundred twelve thousand, thirteen".