13213937 has 16 divisors (see below), whose sum is σ = 15569280. Its totient is φ = 11088000.

The previous prime is 13213933. The next prime is 13213939. The reversal of 13213937 is 73931231.

It is not a de Polignac number, because 13213937 - 2² = 13213933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13213933) 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, 6437 + ... + 8237.

It is an arithmetic number, because the mean of its divisors is an integer number (973080).

Almost surely, 2^13213937 is an apocalyptic number.

It is an amenable number.

13213937 is a deficient number, since it is larger than the sum of its proper divisors (2355343).

13213937 is a wasteful number, since it uses less digits than its factorization.

13213937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its digits is 3402, while the sum is 29.

The square root of 13213937 is about 3635.0979354070. The cubic root of 13213937 is about 236.4162969765.

The spelling of 13213937 in words is "thirteen million, two hundred thirteen thousand, nine hundred thirty-seven".