12311240434217 has 2 divisors, whose sum is σ = 12311240434218. Its totient is φ = 12311240434216.

The previous prime is 12311240434201. The next prime is 12311240434237. The reversal of 12311240434217 is 71243404211321.

12311240434217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11247679307536 + 1063561126681 = 3353756^2 + 1031291^2 .

It is an emirp because it is prime and its reverse (71243404211321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12311240434217 - 2⁴ = 12311240434201 is a prime.

It is not a weakly prime, because it can be changed into another prime (12311240434237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155620217108 + 6155620217109.

It is an arithmetic number, because the mean of its divisors is an integer number (6155620217109).

Almost surely, 2^{12311240434217} is an apocalyptic number.

It is an amenable number.

12311240434217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311240434217 is an equidigital number, since it uses as much as digits as its factorization.

12311240434217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

Adding to 12311240434217 its reverse (71243404211321), we get a palindrome (83554644645538).

The spelling of 12311240434217 in words is "twelve trillion, three hundred eleven billion, two hundred forty million, four hundred thirty-four thousand, two hundred seventeen".