12304040321 has 4 divisors (see below), whose sum is σ = 12304684992. Its totient is φ = 12303395652.

The previous prime is 12304040293. The next prime is 12304040327.

12304040321 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12304040321 - 2¹⁴ = 12304023937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12304040293 and 12304040302.

It is not an unprimeable number, because it can be changed into a prime (12304040327) 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, 292805 + ... + 332178.

It is an arithmetic number, because the mean of its divisors is an integer number (3076171248).

Almost surely, 2^12304040321 is an apocalyptic number.

It is an amenable number.

12304040321 is a deficient number, since it is larger than the sum of its proper divisors (644671).

12304040321 is an equidigital number, since it uses as much as digits as its factorization.

12304040321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644670.

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

It can be divided in two parts, 123040 and 40321, that added together give a palindrome (163361).

The spelling of 12304040321 in words is "twelve billion, three hundred four million, forty thousand, three hundred twenty-one".