13315139 has 4 divisors (see below), whose sum is σ = 13374024. Its totient is φ = 13256256.

The previous prime is 13315123. The next prime is 13315177. The reversal of 13315139 is 93151331.

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

It is a cyclic number.

It is not a de Polignac number, because 13315139 - 2⁴ = 13315123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13315189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29102 + ... + 29555.

It is an arithmetic number, because the mean of its divisors is an integer number (3343506).

Almost surely, 2^13315139 is an apocalyptic number.

13315139 is a deficient number, since it is larger than the sum of its proper divisors (58885).

13315139 is an equidigital number, since it uses as much as digits as its factorization.

13315139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58884.

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

The square root of 13315139 is about 3648.9915045119. The cubic root of 13315139 is about 237.0183123643.

The spelling of 13315139 in words is "thirteen million, three hundred fifteen thousand, one hundred thirty-nine".