12311320312 has 16 divisors (see below), whose sum is σ = 23084915400. Its totient is φ = 6155342880.

The previous prime is 12311320297. The next prime is 12311320367. The reversal of 12311320312 is 21302311321.

It is a self number, because there is not a number n which added to its sum of digits gives 12311320312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247887 + ... + 293377.

Almost surely, 2^12311320312 is an apocalyptic number.

It is an amenable number.

12311320312 is a deficient number, since it is larger than the sum of its proper divisors (10773595088).

12311320312 is a wasteful number, since it uses less digits than its factorization.

12311320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79326 (or 79322 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12311320312 its reverse (21302311321), we get a palindrome (33613631633).

The spelling of 12311320312 in words is "twelve billion, three hundred eleven million, three hundred twenty thousand, three hundred twelve".