12131103423 has 16 divisors (see below), whose sum is σ = 17148589920. Its totient is φ = 7601750016.

The previous prime is 12131103421. The next prime is 12131103431. The reversal of 12131103423 is 32430113121.

It is not a de Polignac number, because 12131103423 - 2¹ = 12131103421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12131103423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131103421) 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, 115440 + ... + 193877.

It is an arithmetic number, because the mean of its divisors is an integer number (1071786870).

Almost surely, 2^12131103423 is an apocalyptic number.

12131103423 is a deficient number, since it is larger than the sum of its proper divisors (5017486497).

12131103423 is a wasteful number, since it uses less digits than its factorization.

12131103423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310106.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12131103423 its reverse (32430113121), we get a palindrome (44561216544).

The spelling of 12131103423 in words is "twelve billion, one hundred thirty-one million, one hundred three thousand, four hundred twenty-three".