13240813 has 8 divisors (see below), whose sum is σ = 13857536. Its totient is φ = 12636000.

The previous prime is 13240771. The next prime is 13240817. The reversal of 13240813 is 31804231.

13240813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13240813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (1732192).

Almost surely, 2^13240813 is an apocalyptic number.

It is an amenable number.

13240813 is a deficient number, since it is larger than the sum of its proper divisors (616723).

13240813 is an equidigital number, since it uses as much as digits as its factorization.

13240813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13240813 is about 3638.7927943207. The cubic root of 13240813 is about 236.5764718353.

The spelling of 13240813 in words is "thirteen million, two hundred forty thousand, eight hundred thirteen".