12131085928 has 32 divisors (see below), whose sum is σ = 24861080160. Its totient is φ = 5515392960.

The previous prime is 12131085893. The next prime is 12131085929. The reversal of 12131085928 is 82958013121.

It is not an unprimeable number, because it can be changed into a prime (12131085929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863518 + ... + 877453.

It is an arithmetic number, because the mean of its divisors is an integer number (776908755).

Almost surely, 2^12131085928 is an apocalyptic number.

It is an amenable number.

12131085928 is an abundant number, since it is smaller than the sum of its proper divisors (12729994232).

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

12131085928 is a wasteful number, since it uses less digits than its factorization.

12131085928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741057 (or 1741053 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The spelling of 12131085928 in words is "twelve billion, one hundred thirty-one million, eighty-five thousand, nine hundred twenty-eight".