13013913 has 12 divisors (see below), whose sum is σ = 19073264. Its totient is φ = 7887000.

The previous prime is 13013909. The next prime is 13013921. The reversal of 13013913 is 31931031.

13013913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13013913 - 2² = 13013909 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 13013913.

It is not an unprimeable number, because it can be changed into a prime (13013963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17563 + ... + 18288.

Almost surely, 2^13013913 is an apocalyptic number.

It is an amenable number.

13013913 is a deficient number, since it is larger than the sum of its proper divisors (6059351).

13013913 is a wasteful number, since it uses less digits than its factorization.

13013913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35876 (or 35865 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 13013913 is about 3607.4801454755. The cubic root of 13013913 is about 235.2173212231.

Adding to 13013913 its reverse (31931031), we get a palindrome (44944944).

The spelling of 13013913 in words is "thirteen million, thirteen thousand, nine hundred thirteen".