13313012321 has 16 divisors (see below), whose sum is σ = 16342512000. Its totient is φ = 10810561104.

The previous prime is 13313012287. The next prime is 13313012351. The reversal of 13313012321 is 12321031331.

It is not a de Polignac number, because 13313012321 - 2²⁶ = 13245903457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13313012293 and 13313012302.

It is not an unprimeable number, because it can be changed into a prime (13313012351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1014890 + ... + 1027923.

It is an arithmetic number, because the mean of its divisors is an integer number (1021407000).

Almost surely, 2^13313012321 is an apocalyptic number.

It is an amenable number.

13313012321 is a deficient number, since it is larger than the sum of its proper divisors (3029499679).

13313012321 is an equidigital number, since it uses as much as digits as its factorization.

13313012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042853 (or 2042839 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13313012321 its reverse (12321031331), we get a palindrome (25634043652).

The spelling of 13313012321 in words is "thirteen billion, three hundred thirteen million, twelve thousand, three hundred twenty-one".