13231511213 has 16 divisors (see below), whose sum is σ = 14813406720. Its totient is φ = 11744787456.

The previous prime is 13231511191. The next prime is 13231511221. The reversal of 13231511213 is 31211513231.

13231511213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13231511213 - 2¹² = 13231507117 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 (13231511263) 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 15 ways as a sum of consecutive naturals, for example, 19820 + ... + 163877.

It is an arithmetic number, because the mean of its divisors is an integer number (925837920).

Almost surely, 2^13231511213 is an apocalyptic number.

It is an amenable number.

13231511213 is a deficient number, since it is larger than the sum of its proper divisors (1581895507).

13231511213 is a wasteful number, since it uses less digits than its factorization.

13231511213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183956.

The product of its digits is 540, while the sum is 23.

The spelling of 13231511213 in words is "thirteen billion, two hundred thirty-one million, five hundred eleven thousand, two hundred thirteen".