13013303321 has 4 divisors (see below), whose sum is σ = 13170090192. Its totient is φ = 12856516452.

The previous prime is 13013303279. The next prime is 13013303333. The reversal of 13013303321 is 12330331031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12330331031 = 3251 ⋅3792781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13013303321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13013303293 and 13013303302.

It is not an unprimeable number, because it can be changed into a prime (13013303221) 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, 78393311 + ... + 78393476.

It is an arithmetic number, because the mean of its divisors is an integer number (3292522548).

Almost surely, 2^13013303321 is an apocalyptic number.

It is an amenable number.

13013303321 is a deficient number, since it is larger than the sum of its proper divisors (156786871).

13013303321 is an equidigital number, since it uses as much as digits as its factorization.

13013303321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156786870.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 13013303321 its reverse (12330331031), we get a palindrome (25343634352).

The spelling of 13013303321 in words is "thirteen billion, thirteen million, three hundred three thousand, three hundred twenty-one".