12031116005 has 16 divisors (see below), whose sum is σ = 14640447600. Its totient is φ = 9490432512.

The previous prime is 12031115959. The next prime is 12031116007. The reversal of 12031116005 is 50061113021.

It can be written as a sum of positive squares in 8 ways, for example, as 3728079364 + 8303036641 = 61058^2 + 91121^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031116005 - 2²⁸ = 11762680549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031116007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43127 + ... + 161003.

It is an arithmetic number, because the mean of its divisors is an integer number (915027975).

Almost surely, 2^12031116005 is an apocalyptic number.

It is an amenable number.

12031116005 is a deficient number, since it is larger than the sum of its proper divisors (2609331595).

12031116005 is a wasteful number, since it uses less digits than its factorization.

12031116005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118168.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 12031116005 its reverse (50061113021), we get a palindrome (62092229026).

The spelling of 12031116005 in words is "twelve billion, thirty-one million, one hundred sixteen thousand, five".