12312505344 has 88 divisors (see below), whose sum is σ = 32869415920. Its totient is φ = 4097654784.

The previous prime is 12312505333. The next prime is 12312505363. The reversal of 12312505344 is 44350521321.

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, 2175222 + ... + 2180874.

It is an arithmetic number, because the mean of its divisors is an integer number (373516090).

Almost surely, 2^12312505344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12312505344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16434707960).

12312505344 is an abundant number, since it is smaller than the sum of its proper divisors (20556910576).

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

12312505344 is an equidigital number, since it uses as much as digits as its factorization.

12312505344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385 (or 6367 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 12312505344 in words is "twelve billion, three hundred twelve million, five hundred five thousand, three hundred forty-four".