12331232113 has 4 divisors (see below), whose sum is σ = 12359321920. Its totient is φ = 12303142308.

The previous prime is 12331232093. The next prime is 12331232131. The reversal of 12331232113 is 31123213321.

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 12331232113 - 2²⁵ = 12297677681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12331232813) 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, 14044245 + ... + 14045122.

It is an arithmetic number, because the mean of its divisors is an integer number (3089830480).

Almost surely, 2^12331232113 is an apocalyptic number.

It is an amenable number.

12331232113 is a deficient number, since it is larger than the sum of its proper divisors (28089807).

12331232113 is an equidigital number, since it uses as much as digits as its factorization.

12331232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28089806.

The product of its digits is 648, while the sum is 22.

Adding to 12331232113 its reverse (31123213321), we get a palindrome (43454445434).

The spelling of 12331232113 in words is "twelve billion, three hundred thirty-one million, two hundred thirty-two thousand, one hundred thirteen".