23312311013 has 4 divisors (see below), whose sum is σ = 23694480108. Its totient is φ = 22930141920.

The previous prime is 23312310947. The next prime is 23312311049. The reversal of 23312311013 is 31011321332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6887838049 + 16424472964 = 82993^2 + 128158^2 .

It is a cyclic number.

It is not a de Polignac number, because 23312311013 - 2³⁴ = 6132441829 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 (23312311313) 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, 191084456 + ... + 191084577.

It is an arithmetic number, because the mean of its divisors is an integer number (5923620027).

Almost surely, 2^23312311013 is an apocalyptic number.

It is an amenable number.

23312311013 is a deficient number, since it is larger than the sum of its proper divisors (382169095).

23312311013 is an equidigital number, since it uses as much as digits as its factorization.

23312311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382169094.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23312311013 its reverse (31011321332), we get a palindrome (54323632345).

The spelling of 23312311013 in words is "twenty-three billion, three hundred twelve million, three hundred eleven thousand, thirteen".