13313332321 has 4 divisors (see below), whose sum is σ = 13414960944. Its totient is φ = 13211703700.

The previous prime is 13313332273. The next prime is 13313332337. The reversal of 13313332321 is 12323331331.

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: 12323331331 = 17 ⋅724901843.

It is not a de Polignac number, because 13313332321 - 2⁹ = 13313331809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13313332391) 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, 50814115 + ... + 50814376.

It is an arithmetic number, because the mean of its divisors is an integer number (3353740236).

Almost surely, 2^13313332321 is an apocalyptic number.

It is an amenable number.

13313332321 is a deficient number, since it is larger than the sum of its proper divisors (101628623).

13313332321 is a wasteful number, since it uses less digits than its factorization.

13313332321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101628622.

The product of its digits is 2916, while the sum is 25.

Adding to 13313332321 its reverse (12323331331), we get a palindrome (25636663652).

The spelling of 13313332321 in words is "thirteen billion, three hundred thirteen million, three hundred thirty-two thousand, three hundred twenty-one".