12304343021 has 12 divisors (see below), whose sum is σ = 12780512640. Its totient is φ = 11833584840.

The previous prime is 12304343017. The next prime is 12304343071. The reversal of 12304343021 is 12034340321.

It is not a de Polignac number, because 12304343021 - 2² = 12304343017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12304343071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 816170 + ... + 831108.

It is an arithmetic number, because the mean of its divisors is an integer number (1065042720).

Almost surely, 2^12304343021 is an apocalyptic number.

It is an amenable number.

12304343021 is a deficient number, since it is larger than the sum of its proper divisors (476169619).

12304343021 is an equidigital number, since it uses as much as digits as its factorization.

12304343021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15296 (or 15133 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12304343021 its reverse (12034340321), we get a palindrome (24338683342).

The spelling of 12304343021 in words is "twelve billion, three hundred four million, three hundred forty-three thousand, twenty-one".