12304305217 has 2 divisors, whose sum is σ = 12304305218. Its totient is φ = 12304305216.

The previous prime is 12304305191. The next prime is 12304305229. The reversal of 12304305217 is 71250340321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6721376256 + 5582928961 = 81984^2 + 74719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12304305217 is a prime.

It is not a weakly prime, because it can be changed into another prime (12304305617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6152152608 + 6152152609.

It is an arithmetic number, because the mean of its divisors is an integer number (6152152609).

Almost surely, 2^12304305217 is an apocalyptic number.

It is an amenable number.

12304305217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12304305217 is an equidigital number, since it uses as much as digits as its factorization.

12304305217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 12304305217 its reverse (71250340321), we get a palindrome (83554645538).

The spelling of 12304305217 in words is "twelve billion, three hundred four million, three hundred five thousand, two hundred seventeen".