13321321312 has 48 divisors (see below), whose sum is σ = 29905176672. Its totient is φ = 5786634240.

The previous prime is 13321321289. The next prime is 13321321339. The reversal of 13321321312 is 21312312331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934764 + ... + 948907.

It is an arithmetic number, because the mean of its divisors is an integer number (623024514).

Almost surely, 2^13321321312 is an apocalyptic number.

It is an amenable number.

13321321312 is an abundant number, since it is smaller than the sum of its proper divisors (16583855360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13321321312 is a wasteful number, since it uses less digits than its factorization.

13321321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883711 (or 1883703 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 13321321312 its reverse (21312312331), we get a palindrome (34633633643).

The spelling of 13321321312 in words is "thirteen billion, three hundred twenty-one million, three hundred twenty-one thousand, three hundred twelve".