12031224 has 64 divisors (see below), whose sum is σ = 31549440. Its totient is φ = 3818880.

The previous prime is 12031219. The next prime is 12031247. The reversal of 12031224 is 42213021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76554 + ... + 76710.

It is an arithmetic number, because the mean of its divisors is an integer number (492960).

Almost surely, 2^12031224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12031224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15774720).

12031224 is an abundant number, since it is smaller than the sum of its proper divisors (19518216).

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

12031224 is a wasteful number, since it uses less digits than its factorization.

12031224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12031224 is about 3468.6054834760. The cubic root of 12031224 is about 229.1412462970.

Adding to 12031224 its reverse (42213021), we get a palindrome (54244245).

The spelling of 12031224 in words is "twelve million, thirty-one thousand, two hundred twenty-four".