12931681528 has 16 divisors (see below), whose sum is σ = 24437825280. Its totient is φ = 6414928128.

The previous prime is 12931681501. The next prime is 12931681531. The reversal of 12931681528 is 82518613921.

It is a super-3 number, since 3×12931681528³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6363001 + ... + 6365032.

It is an arithmetic number, because the mean of its divisors is an integer number (1527364080).

Almost surely, 2^12931681528 is an apocalyptic number.

It is an amenable number.

12931681528 is a deficient number, since it is larger than the sum of its proper divisors (11506143752).

12931681528 is a wasteful number, since it uses less digits than its factorization.

12931681528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12728166 (or 12728162 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The spelling of 12931681528 in words is "twelve billion, nine hundred thirty-one million, six hundred eighty-one thousand, five hundred twenty-eight".