13390313 has 4 divisors (see below), whose sum is σ = 13716948. Its totient is φ = 13063680.

The previous prime is 13390303. The next prime is 13390331. The reversal of 13390313 is 31309331.

13390313 = 2587² + 2588².

13390313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6697744 + 6692569 = 2588^2 + 2587^2 .

It is a cyclic number.

It is not a de Polignac number, because 13390313 - 2⁶ = 13390249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13390303) 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, 163256 + ... + 163337.

It is an arithmetic number, because the mean of its divisors is an integer number (3429237).

Almost surely, 2^13390313 is an apocalyptic number.

13390313 is the 2588-th centered square number.

It is an amenable number.

13390313 is a deficient number, since it is larger than the sum of its proper divisors (326635).

13390313 is an equidigital number, since it uses as much as digits as its factorization.

13390313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326634.

The product of its (nonzero) digits is 729, while the sum is 23.

The square root of 13390313 is about 3659.2776609599. The cubic root of 13390313 is about 237.4635245923.

Adding to 13390313 its reverse (31309331), we get a palindrome (44699644).

The spelling of 13390313 in words is "thirteen million, three hundred ninety thousand, three hundred thirteen".