12031071904 has 24 divisors (see below), whose sum is σ = 25079478228. Its totient is φ = 5661680640.

The previous prime is 12031071881. The next prime is 12031071911. The reversal of 12031071904 is 40917013021.

It can be written as a sum of positive squares in 2 ways, for example, as 11502991504 + 528080400 = 107252^2 + 22980^2 .

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, 11057427 + ... + 11058514.

Almost surely, 2^12031071904 is an apocalyptic number.

It is an amenable number.

12031071904 is an abundant number, since it is smaller than the sum of its proper divisors (13048406324).

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

12031071904 is a wasteful number, since it uses less digits than its factorization.

12031071904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22115968 (or 22115960 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 12031071904 its reverse (40917013021), we get a palindrome (52948084925).

The spelling of 12031071904 in words is "twelve billion, thirty-one million, seventy-one thousand, nine hundred four".