12131085504 has 56 divisors (see below), whose sum is σ = 32119143280. Its totient is φ = 4040884224.

The previous prime is 12131085467. The next prime is 12131085529. The reversal of 12131085504 is 40558013121.

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, 264672 + ... + 307104.

It is an arithmetic number, because the mean of its divisors is an integer number (573556130).

Almost surely, 2^12131085504 is an apocalyptic number.

It is an amenable number.

12131085504 is an abundant number, since it is smaller than the sum of its proper divisors (19988057776).

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

12131085504 is a wasteful number, since it uses less digits than its factorization.

12131085504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43937 (or 43927 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 12131085504 its reverse (40558013121), we get a palindrome (52689098625).

The spelling of 12131085504 in words is "twelve billion, one hundred thirty-one million, eighty-five thousand, five hundred four".