12320403304 has 32 divisors (see below), whose sum is σ = 25546055040. Its totient is φ = 5523465600.

The previous prime is 12320403283. The next prime is 12320403311. The reversal of 12320403304 is 40330402321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952512 + ... + 965359.

It is an arithmetic number, because the mean of its divisors is an integer number (798314220).

Almost surely, 2^12320403304 is an apocalyptic number.

It is an amenable number.

12320403304 is an abundant number, since it is smaller than the sum of its proper divisors (13225651736).

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

12320403304 is a wasteful number, since it uses less digits than its factorization.

12320403304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917961 (or 1917957 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 12320403304 its reverse (40330402321), we get a palindrome (52650805625).

The spelling of 12320403304 in words is "twelve billion, three hundred twenty million, four hundred three thousand, three hundred four".