12320144312 has 64 divisors (see below), whose sum is σ = 28436179200. Its totient is φ = 4885816320.

The previous prime is 12320144299. The next prime is 12320144339. The reversal of 12320144312 is 21344102321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88889 + ... + 180392.

It is an arithmetic number, because the mean of its divisors is an integer number (444315300).

Almost surely, 2^12320144312 is an apocalyptic number.

It is an amenable number.

12320144312 is an abundant number, since it is smaller than the sum of its proper divisors (16116034888).

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

12320144312 is a wasteful number, since it uses less digits than its factorization.

12320144312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269356 (or 269352 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12320144312 its reverse (21344102321), we get a palindrome (33664246633).

The spelling of 12320144312 in words is "twelve billion, three hundred twenty million, one hundred forty-four thousand, three hundred twelve".