13112391 has 8 divisors (see below), whose sum is σ = 17550720. Its totient is φ = 8707832.

The previous prime is 13112383. The next prime is 13112417. The reversal of 13112391 is 19321131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13112391 - 2³ = 13112383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7521 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (2193840).

Almost surely, 2^13112391 is an apocalyptic number.

13112391 is a deficient number, since it is larger than the sum of its proper divisors (4438329).

13112391 is a wasteful number, since it uses less digits than its factorization.

13112391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16885.

The product of its digits is 162, while the sum is 21.

The square root of 13112391 is about 3621.1035610709. The cubic root of 13112391 is about 235.8091377936.

The spelling of 13112391 in words is "thirteen million, one hundred twelve thousand, three hundred ninety-one".