13231885 has 16 divisors (see below), whose sum is σ = 17256960. Its totient is φ = 9702720.

The previous prime is 13231873. The next prime is 13231891. The reversal of 13231885 is 58813231.

It is not a de Polignac number, because 13231885 - 2⁹ = 13231373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699 + ... + 5191.

It is an arithmetic number, because the mean of its divisors is an integer number (1078560).

Almost surely, 2^13231885 is an apocalyptic number.

It is an amenable number.

13231885 is a deficient number, since it is larger than the sum of its proper divisors (4025075).

13231885 is a wasteful number, since it uses less digits than its factorization.

13231885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548.

The product of its digits is 5760, while the sum is 31.

The square root of 13231885 is about 3637.5658069649. The cubic root of 13231885 is about 236.5232870436.

The spelling of 13231885 in words is "thirteen million, two hundred thirty-one thousand, eight hundred eighty-five".