12131334423 has 24 divisors (see below), whose sum is σ = 18891447120. Its totient is φ = 7457333760.

The previous prime is 12131334403. The next prime is 12131334443. The reversal of 12131334423 is 32443313121.

It is a happy number.

12131334423 is a `hidden beast` number, since 1 + 2 + 1 + 313 + 344 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (12131334403) and next prime (12131334443).

It is not a de Polignac number, because 12131334423 - 2¹² = 12131330327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131334403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52888 + ... + 164498.

It is an arithmetic number, because the mean of its divisors is an integer number (787143630).

Almost surely, 2^12131334423 is an apocalyptic number.

12131334423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12131334423 is a deficient number, since it is larger than the sum of its proper divisors (6760112697).

12131334423 is a wasteful number, since it uses less digits than its factorization.

12131334423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112559 (or 112556 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 12131334423 its reverse (32443313121), we get a palindrome (44574647544).

The spelling of 12131334423 in words is "twelve billion, one hundred thirty-one million, three hundred thirty-four thousand, four hundred twenty-three".