12312013123 has 16 divisors (see below), whose sum is σ = 12738604032. Its totient is φ = 11891880000.

The previous prime is 12312013099. The next prime is 12312013159. The reversal of 12312013123 is 32131021321.

It is a cyclic number.

It is not a de Polignac number, because 12312013123 - 2³³ = 3722078531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12312013123.

It is not an unprimeable number, because it can be changed into a prime (12312013163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2484298 + ... + 2489248.

It is an arithmetic number, because the mean of its divisors is an integer number (796162752).

Almost surely, 2^12312013123 is an apocalyptic number.

12312013123 is a deficient number, since it is larger than the sum of its proper divisors (426590909).

12312013123 is a wasteful number, since it uses less digits than its factorization.

12312013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12312013123 its reverse (32131021321), we get a palindrome (44443034444).

The spelling of 12312013123 in words is "twelve billion, three hundred twelve million, thirteen thousand, one hundred twenty-three".