13231320202331 has 16 divisors (see below), whose sum is σ = 16496272935168. Its totient is φ = 10310068692000.

The previous prime is 13231320202271. The next prime is 13231320202339. The reversal of 13231320202331 is 13320202313231.

It is not a de Polignac number, because 13231320202331 - 2¹⁴ = 13231320185947 is a prime.

It is a super-2 number, since 2×13231320202331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13231320202331.

It is not an unprimeable number, because it can be changed into a prime (13231320202339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25371401 + ... + 25887653.

It is an arithmetic number, because the mean of its divisors is an integer number (1031017058448).

Almost surely, 2^{13231320202331} is an apocalyptic number.

13231320202331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13231320202331 is a deficient number, since it is larger than the sum of its proper divisors (3264952732837).

13231320202331 is a wasteful number, since it uses less digits than its factorization.

13231320202331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849122.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 13231320202331 its reverse (13320202313231), we get a palindrome (26551522515562).

The spelling of 13231320202331 in words is "thirteen trillion, two hundred thirty-one billion, three hundred twenty million, two hundred two thousand, three hundred thirty-one".