12312320313220 has 48 divisors (see below), whose sum is σ = 26647511647680. Its totient is φ = 4775787709056.

The previous prime is 12312320313211. The next prime is 12312320313239. The reversal of 12312320313220 is 2231302321321.

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 15 ways as a sum of consecutive naturals, for example, 51379207 + ... + 51618286.

It is an arithmetic number, because the mean of its divisors is an integer number (555156492660).

Almost surely, 2^{12312320313220} is an apocalyptic number.

12312320313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312320313220 is an abundant number, since it is smaller than the sum of its proper divisors (14335191334460).

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

12312320313220 is a wasteful number, since it uses less digits than its factorization.

12312320313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102997684 (or 102997682 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 12312320313220 its reverse (2231302321321), we get a palindrome (14543622634541).

The spelling of 12312320313220 in words is "twelve trillion, three hundred twelve billion, three hundred twenty million, three hundred thirteen thousand, two hundred twenty".