12131334424 has 32 divisors (see below), whose sum is σ = 24826939200. Its totient is φ = 5511388320.

The previous prime is 12131334403. The next prime is 12131334443. The reversal of 12131334424 is 42443313121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12131334392 and 12131334401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140167 + ... + 209545.

It is an arithmetic number, because the mean of its divisors is an integer number (775841850).

Almost surely, 2^12131334424 is an apocalyptic number.

It is an amenable number.

12131334424 is an abundant number, since it is smaller than the sum of its proper divisors (12695604776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131334424 is a wasteful number, since it uses less digits than its factorization.

12131334424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71383 (or 71379 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

Adding to 12131334424 its reverse (42443313121), we get a palindrome (54574647545).

The spelling of 12131334424 in words is "twelve billion, one hundred thirty-one million, three hundred thirty-four thousand, four hundred twenty-four".