12281324 has 12 divisors (see below), whose sum is σ = 23446248. Its totient is φ = 5582400.

The previous prime is 12281323. The next prime is 12281329. The reversal of 12281324 is 42318221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12281324.

It is not an unprimeable number, because it can be changed into a prime (12281323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139517 + ... + 139604.

It is an arithmetic number, because the mean of its divisors is an integer number (1953854).

Almost surely, 2^12281324 is an apocalyptic number.

It is an amenable number.

12281324 is a deficient number, since it is larger than the sum of its proper divisors (11164924).

12281324 is a wasteful number, since it uses less digits than its factorization.

12281324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279136 (or 279134 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 12281324 is about 3504.4720001735. The cubic root of 12281324 is about 230.7181334959.

Adding to 12281324 its reverse (42318221), we get a palindrome (54599545).

It can be divided in two parts, 1228 and 1324, that added together give a palindrome (2552).

The spelling of 12281324 in words is "twelve million, two hundred eighty-one thousand, three hundred twenty-four".