13931315 has 8 divisors (see below), whose sum is σ = 17033328. Its totient is φ = 10934560.

The previous prime is 13931299. The next prime is 13931327. The reversal of 13931315 is 51313931.

13931315 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 not a de Polignac number, because 13931315 - 2⁴ = 13931299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26021 + ... + 26550.

It is an arithmetic number, because the mean of its divisors is an integer number (2129166).

Almost surely, 2^13931315 is an apocalyptic number.

13931315 is a deficient number, since it is larger than the sum of its proper divisors (3102013).

13931315 is an equidigital number, since it uses as much as digits as its factorization.

13931315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52629.

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

The square root of 13931315 is about 3732.4676823785. The cubic root of 13931315 is about 240.6194357515.

The spelling of 13931315 in words is "thirteen million, nine hundred thirty-one thousand, three hundred fifteen".