12321304 has 16 divisors (see below), whose sum is σ = 23139720. Its totient is φ = 6150720.

The previous prime is 12321301. The next prime is 12321319. The reversal of 12321304 is 40312321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321301) 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, 8899 + ... + 10189.

Almost surely, 2^12321304 is an apocalyptic number.

It is an amenable number.

12321304 is a deficient number, since it is larger than the sum of its proper divisors (10818416).

12321304 is a wasteful number, since it uses less digits than its factorization.

12321304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12321304 is about 3510.1715057814. The cubic root of 12321304 is about 230.9682183620.

Adding to 12321304 its reverse (40312321), we get a palindrome (52633625).

It can be divided in two parts, 1232 and 1304, that multiplied together give a triangular number (1606528 = T₁₇₉₂).

The spelling of 12321304 in words is "twelve million, three hundred twenty-one thousand, three hundred four".