13103112013 has 4 divisors (see below), whose sum is σ = 13238195740. Its totient is φ = 12968028288.

The previous prime is 13103111951. The next prime is 13103112017. The reversal of 13103112013 is 31021130131.

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 10274255044 + 2828856969 = 101362^2 + 53187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13103112013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103112017) 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, 67541718 + ... + 67541911.

It is an arithmetic number, because the mean of its divisors is an integer number (3309548935).

Almost surely, 2^13103112013 is an apocalyptic number.

It is an amenable number.

13103112013 is a deficient number, since it is larger than the sum of its proper divisors (135083727).

13103112013 is an equidigital number, since it uses as much as digits as its factorization.

13103112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135083726.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 13103112013 its reverse (31021130131), we get a palindrome (44124242144).

The spelling of 13103112013 in words is "thirteen billion, one hundred three million, one hundred twelve thousand, thirteen".