12131123013 has 24 divisors (see below), whose sum is σ = 18405728640. Its totient is φ = 7684538400.

The previous prime is 12131122987. The next prime is 12131123033. The reversal of 12131123013 is 31032113121.

12131123013 is a `hidden beast` number, since 121 + 311 + 230 + 1 + 3 = 666.

12131123013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12131123013 - 2⁵ = 12131122981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131123033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162798 + ... + 225311.

It is an arithmetic number, because the mean of its divisors is an integer number (766905360).

Almost surely, 2^12131123013 is an apocalyptic number.

It is an amenable number.

12131123013 is a deficient number, since it is larger than the sum of its proper divisors (6274605627).

12131123013 is a wasteful number, since it uses less digits than its factorization.

12131123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388289 (or 388286 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12131123013 its reverse (31032113121), we get a palindrome (43163236134).

The spelling of 12131123013 in words is "twelve billion, one hundred thirty-one million, one hundred twenty-three thousand, thirteen".