13231122513 has 32 divisors (see below), whose sum is σ = 20745683712. Its totient is φ = 7344480000.

The previous prime is 13231122497. The next prime is 13231122539. The reversal of 13231122513 is 31522113231.

It is a happy number.

It is not a de Polignac number, because 13231122513 - 2⁴ = 13231122497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13231122713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53563 + ... + 171263.

It is an arithmetic number, because the mean of its divisors is an integer number (648302616).

Almost surely, 2^13231122513 is an apocalyptic number.

It is an amenable number.

13231122513 is a deficient number, since it is larger than the sum of its proper divisors (7514561199).

13231122513 is a wasteful number, since it uses less digits than its factorization.

13231122513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117865.

The product of its digits is 1080, while the sum is 24.

Adding to 13231122513 its reverse (31522113231), we get a palindrome (44753235744).

The spelling of 13231122513 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-two thousand, five hundred thirteen".