13308913 has 4 divisors (see below), whose sum is σ = 13316580. Its totient is φ = 13301248.

The previous prime is 13308907. The next prime is 13308917. The reversal of 13308913 is 31980331.

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 7491169 + 5817744 = 2737^2 + 2412^2 .

It is a cyclic number.

It is not a de Polignac number, because 13308913 - 2¹⁷ = 13177841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13308917) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 153 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (3329145).

Almost surely, 2^13308913 is an apocalyptic number.

It is an amenable number.

13308913 is a deficient number, since it is larger than the sum of its proper divisors (7667).

13308913 is an equidigital number, since it uses as much as digits as its factorization.

13308913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7666.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13308913 is about 3648.1382923349. The cubic root of 13308913 is about 236.9813642940.

The spelling of 13308913 in words is "thirteen million, three hundred eight thousand, nine hundred thirteen".