13021320313 has 4 divisors (see below), whose sum is σ = 13034567808. Its totient is φ = 13008072820.

The previous prime is 13021320283. The next prime is 13021320337. The reversal of 13021320313 is 31302312031.

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 13021320313 - 2¹³ = 13021312121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13021320373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6622273 + ... + 6624238.

It is an arithmetic number, because the mean of its divisors is an integer number (3258641952).

Almost surely, 2^13021320313 is an apocalyptic number.

It is an amenable number.

13021320313 is a deficient number, since it is larger than the sum of its proper divisors (13247495).

13021320313 is an equidigital number, since it uses as much as digits as its factorization.

13021320313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247494.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13021320313 its reverse (31302312031), we get a palindrome (44323632344).

The spelling of 13021320313 in words is "thirteen billion, twenty-one million, three hundred twenty thousand, three hundred thirteen".