12131323422 has 64 divisors (see below), whose sum is σ = 25278177600. Its totient is φ = 3878102016.

The previous prime is 12131323397. The next prime is 12131323423. The reversal of 12131323422 is 22432313121.

12131323422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12131323392 and 12131323401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131323423) 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 31 ways as a sum of consecutive naturals, for example, 4530348 + ... + 4533024.

It is an arithmetic number, because the mean of its divisors is an integer number (394971525).

Almost surely, 2^12131323422 is an apocalyptic number.

12131323422 is an abundant number, since it is smaller than the sum of its proper divisors (13146854178).

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

12131323422 is a wasteful number, since it uses less digits than its factorization.

12131323422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005.

The product of its digits is 1728, while the sum is 24.

Adding to 12131323422 its reverse (22432313121), we get a palindrome (34563636543).

The spelling of 12131323422 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-three thousand, four hundred twenty-two".