13103139 has 12 divisors (see below), whose sum is σ = 20323464. Its totient is φ = 7487424.

The previous prime is 13103087. The next prime is 13103147. The reversal of 13103139 is 93130131.

13103139 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13103139 - 2⁷ = 13103011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13103159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44422 + ... + 44715.

It is an arithmetic number, because the mean of its divisors is an integer number (1693622).

Almost surely, 2^13103139 is an apocalyptic number.

13103139 is a deficient number, since it is larger than the sum of its proper divisors (7220325).

13103139 is an equidigital number, since it uses as much as digits as its factorization.

13103139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89154 (or 89147 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 13103139 is about 3619.8258245391. The cubic root of 13103139 is about 235.7536630528.

The spelling of 13103139 in words is "thirteen million, one hundred three thousand, one hundred thirty-nine".