13321240312 has 64 divisors (see below), whose sum is σ = 25647713280. Its totient is φ = 6484810752.

The previous prime is 13321240301. The next prime is 13321240319. The reversal of 13321240312 is 21304212331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321240319) 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, 21730918 + ... + 21731530.

It is an arithmetic number, because the mean of its divisors is an integer number (400745520).

Almost surely, 2^13321240312 is an apocalyptic number.

It is an amenable number.

13321240312 is a deficient number, since it is larger than the sum of its proper divisors (12326472968).

13321240312 is a wasteful number, since it uses less digits than its factorization.

13321240312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13321240312 its reverse (21304212331), we get a palindrome (34625452643).

The spelling of 13321240312 in words is "thirteen billion, three hundred twenty-one million, two hundred forty thousand, three hundred twelve".