13185923 has 16 divisors (see below), whose sum is σ = 14541120. Its totient is φ = 11915904.

The previous prime is 13185919. The next prime is 13185947. The reversal of 13185923 is 32958131.

It is a cyclic number.

It is not a de Polignac number, because 13185923 - 2² = 13185919 is a prime.

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 13185923.

It is not an unprimeable number, because it can be changed into a prime (13185023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35165 + ... + 35537.

It is an arithmetic number, because the mean of its divisors is an integer number (908820).

Almost surely, 2^13185923 is an apocalyptic number.

13185923 is a deficient number, since it is larger than the sum of its proper divisors (1355197).

13185923 is a wasteful number, since it uses less digits than its factorization.

13185923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 6480, while the sum is 32.

The square root of 13185923 is about 3631.2426247774. The cubic root of 13185923 is about 236.2491085509.

The spelling of 13185923 in words is "thirteen million, one hundred eighty-five thousand, nine hundred twenty-three".