13312791 has 24 divisors (see below), whose sum is σ = 20363616. Its totient is φ = 8363520.

The previous prime is 13312781. The next prime is 13312801. The reversal of 13312791 is 19721331.

13312791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13312781) and next prime (13312801).

It is not a de Polignac number, because 13312791 - 2⁶ = 13312727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14671 + ... + 15551.

It is an arithmetic number, because the mean of its divisors is an integer number (848484).

Almost surely, 2^13312791 is an apocalyptic number.

13312791 is a deficient number, since it is larger than the sum of its proper divisors (7050825).

13312791 is a wasteful number, since it uses less digits than its factorization.

13312791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 980 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 13312791 is about 3648.6697575966. The cubic root of 13312791 is about 237.0043795591.

The spelling of 13312791 in words is "thirteen million, three hundred twelve thousand, seven hundred ninety-one".