13321812331 has 4 divisors (see below), whose sum is σ = 13781185200. Its totient is φ = 12862439464.

The previous prime is 13321812319. The next prime is 13321812341.

13321812331 is nontrivially palindromic in base 10.

13321812331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13321812331 - 2⁵ = 13321812299 is a prime.

It is a super-2 number, since 2×13321812331² (a number of 21 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 13321812331.

It is not an unprimeable number, because it can be changed into a prime (13321812341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229686391 + ... + 229686448.

It is an arithmetic number, because the mean of its divisors is an integer number (3445296300).

Almost surely, 2^13321812331 is an apocalyptic number.

13321812331 is a deficient number, since it is larger than the sum of its proper divisors (459372869).

13321812331 is an equidigital number, since it uses as much as digits as its factorization.

13321812331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459372868.

The product of its digits is 2592, while the sum is 28.

The spelling of 13321812331 in words is "thirteen billion, three hundred twenty-one million, eight hundred twelve thousand, three hundred thirty-one".