12434311217 has 2 divisors, whose sum is σ = 12434311218. Its totient is φ = 12434311216.

The previous prime is 12434311199. The next prime is 12434311223. The reversal of 12434311217 is 71211343421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6568129936 + 5866181281 = 81044^2 + 76591^2 .

It is an emirp because it is prime and its reverse (71211343421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12434311217 - 2¹² = 12434307121 is a prime.

It is a super-2 number, since 2×12434311217² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12434311217.

It is not a weakly prime, because it can be changed into another prime (12434311297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6217155608 + 6217155609.

It is an arithmetic number, because the mean of its divisors is an integer number (6217155609).

Almost surely, 2^12434311217 is an apocalyptic number.

It is an amenable number.

12434311217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12434311217 is an equidigital number, since it uses as much as digits as its factorization.

12434311217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

Adding to 12434311217 its reverse (71211343421), we get a palindrome (83645654638).

The spelling of 12434311217 in words is "twelve billion, four hundred thirty-four million, three hundred eleven thousand, two hundred seventeen".