13256713 has 4 divisors (see below), whose sum is σ = 13266180. Its totient is φ = 13247248.

The previous prime is 13256707. The next prime is 13256723. The reversal of 13256713 is 31765231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6718464 + 6538249 = 2592^2 + 2557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13256713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13256723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170 + ... + 5587.

It is an arithmetic number, because the mean of its divisors is an integer number (3316545).

Almost surely, 2^13256713 is an apocalyptic number.

It is an amenable number.

13256713 is a deficient number, since it is larger than the sum of its proper divisors (9467).

13256713 is an equidigital number, since it uses as much as digits as its factorization.

13256713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9466.

The product of its digits is 3780, while the sum is 28.

The square root of 13256713 is about 3640.9769293419. The cubic root of 13256713 is about 236.6711302030.

The spelling of 13256713 in words is "thirteen million, two hundred fifty-six thousand, seven hundred thirteen".