13123042013 has 4 divisors (see below), whose sum is σ = 13209949728. Its totient is φ = 13036134300.

The previous prime is 13123041947. The next prime is 13123042063. The reversal of 13123042013 is 31024032131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13123042013 - 2¹⁸ = 13122779869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123042063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43453631 + ... + 43453932.

It is an arithmetic number, because the mean of its divisors is an integer number (3302487432).

Almost surely, 2^13123042013 is an apocalyptic number.

It is an amenable number.

13123042013 is a deficient number, since it is larger than the sum of its proper divisors (86907715).

13123042013 is an equidigital number, since it uses as much as digits as its factorization.

13123042013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86907714.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13123042013 its reverse (31024032131), we get a palindrome (44147074144).

The spelling of 13123042013 in words is "thirteen billion, one hundred twenty-three million, forty-two thousand, thirteen".