13231232311 has 32 divisors (see below), whose sum is σ = 15726686976. Its totient is φ = 10995264000.

The previous prime is 13231232297. The next prime is 13231232341. The reversal of 13231232311 is 11323213231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231232311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231232341) 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, 1450876 + ... + 1459966.

It is an arithmetic number, because the mean of its divisors is an integer number (491458968).

Almost surely, 2^13231232311 is an apocalyptic number.

13231232311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13231232311 is a deficient number, since it is larger than the sum of its proper divisors (2495454665).

13231232311 is a wasteful number, since it uses less digits than its factorization.

13231232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343.

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

Adding to 13231232311 its reverse (11323213231), we get a palindrome (24554445542).

It can be divided in two parts, 13231 and 232311, that added together give a palindrome (245542).

The spelling of 13231232311 in words is "thirteen billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred eleven".