12031313224 has 64 divisors (see below), whose sum is σ = 26457177600. Its totient is φ = 5021568000.

The previous prime is 12031313197. The next prime is 12031313227. The reversal of 12031313224 is 42231313021.

It is a junction number, because it is equal to n+sod(n) for n = 12031313195 and 12031313204.

It is not an unprimeable number, because it can be changed into a prime (12031313227) 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, 1375537 + ... + 1384255.

It is an arithmetic number, because the mean of its divisors is an integer number (413393400).

Almost surely, 2^12031313224 is an apocalyptic number.

12031313224 is a gapful number since it is divisible by the number (14) 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 12031313224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13228588800).

12031313224 is an abundant number, since it is smaller than the sum of its proper divisors (14425864376).

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

12031313224 is a wasteful number, since it uses less digits than its factorization.

12031313224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9374 (or 9370 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12031313224 its reverse (42231313021), we get a palindrome (54262626245).

The spelling of 12031313224 in words is "twelve billion, thirty-one million, three hundred thirteen thousand, two hundred twenty-four".