12322131312 has 80 divisors (see below), whose sum is σ = 32950525952. Its totient is φ = 3964826880.

The previous prime is 12322131277. The next prime is 12322131319. The reversal of 12322131312 is 21313122321.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322131319) 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, 198237 + ... + 252867.

Almost surely, 2^12322131312 is an apocalyptic number.

12322131312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12322131312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16475262976).

12322131312 is an abundant number, since it is smaller than the sum of its proper divisors (20628394640).

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

12322131312 is a wasteful number, since it uses less digits than its factorization.

12322131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54806 (or 54800 counting only the distinct ones).

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

Adding to 12322131312 its reverse (21313122321), we get a palindrome (33635253633).

The spelling of 12322131312 in words is "twelve billion, three hundred twenty-two million, one hundred thirty-one thousand, three hundred twelve".