13287913 has 2 divisors, whose sum is σ = 13287914. Its totient is φ = 13287912.

The previous prime is 13287893. The next prime is 13287917. The reversal of 13287913 is 31978231.

13287913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10004569 + 3283344 = 3163^2 + 1812^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13287913 is a prime.

It is not a weakly prime, because it can be changed into another prime (13287917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643956 + 6643957.

It is an arithmetic number, because the mean of its divisors is an integer number (6643957).

Almost surely, 2^13287913 is an apocalyptic number.

It is an amenable number.

13287913 is a deficient number, since it is larger than the sum of its proper divisors (1).

13287913 is an equidigital number, since it uses as much as digits as its factorization.

13287913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 13287913 is about 3645.2589757108. The cubic root of 13287913 is about 236.8566551746.

The spelling of 13287913 in words is "thirteen million, two hundred eighty-seven thousand, nine hundred thirteen".