12321344 has 42 divisors (see below), whose sum is σ = 28449270. Its totient is φ = 5279232.

The previous prime is 12321343. The next prime is 12321359. The reversal of 12321344 is 44312321.

It can be written as a sum of positive squares in only one way, i.e., 8479744 + 3841600 = 2912^2 + 1960^2 .

It is not an unprimeable number, because it can be changed into a prime (12321341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172 + ... + 5100.

Almost surely, 2^12321344 is an apocalyptic number.

12321344 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 12321344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14224635).

12321344 is an abundant number, since it is smaller than the sum of its proper divisors (16127926).

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

12321344 is an equidigital number, since it uses as much as digits as its factorization.

12321344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955 (or 3938 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 12321344 is about 3510.1772035041. The cubic root of 12321344 is about 230.9684683009.

Adding to 12321344 its reverse (44312321), we get a palindrome (56633665).

The spelling of 12321344 in words is "twelve million, three hundred twenty-one thousand, three hundred forty-four".