12312481728 has 112 divisors (see below), whose sum is σ = 33688690560. Its totient is φ = 3966403584.

The previous prime is 12312481691. The next prime is 12312481747. The reversal of 12312481728 is 82718421321.

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, 672763 + ... + 690821.

It is an arithmetic number, because the mean of its divisors is an integer number (300791880).

Almost surely, 2^12312481728 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 12312481728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16844345280).

12312481728 is an abundant number, since it is smaller than the sum of its proper divisors (21376208832).

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

12312481728 is a wasteful number, since it uses less digits than its factorization.

12312481728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18194 (or 18184 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The spelling of 12312481728 in words is "twelve billion, three hundred twelve million, four hundred eighty-one thousand, seven hundred twenty-eight".