13313915 has 4 divisors (see below), whose sum is σ = 15976704. Its totient is φ = 10651128.

The previous prime is 13313899. The next prime is 13313917. The reversal of 13313915 is 51931331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51931331 = 5261 ⋅9871.

It is a cyclic number.

It is not a de Polignac number, because 13313915 - 2⁴ = 13313899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13313917) 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, 1331387 + ... + 1331396.

It is an arithmetic number, because the mean of its divisors is an integer number (3994176).

Almost surely, 2^13313915 is an apocalyptic number.

13313915 is a deficient number, since it is larger than the sum of its proper divisors (2662789).

13313915 is an equidigital number, since it uses as much as digits as its factorization.

13313915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662788.

The product of its digits is 1215, while the sum is 26.

The square root of 13313915 is about 3648.8237830841. The cubic root of 13313915 is about 237.0110494709.

The spelling of 13313915 in words is "thirteen million, three hundred thirteen thousand, nine hundred fifteen".