12343432217 has 2 divisors, whose sum is σ = 12343432218. Its totient is φ = 12343432216.

The previous prime is 12343432181. The next prime is 12343432219. The reversal of 12343432217 is 71223434321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12343432201 + 16 = 111101^2 + 4^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12343432217 is a prime.

Together with 12343432219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12343432219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6171716108 + 6171716109.

It is an arithmetic number, because the mean of its divisors is an integer number (6171716109).

Almost surely, 2^12343432217 is an apocalyptic number.

It is an amenable number.

12343432217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12343432217 is an equidigital number, since it uses as much as digits as its factorization.

12343432217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

Adding to 12343432217 its reverse (71223434321), we get a palindrome (83566866538).

The spelling of 12343432217 in words is "twelve billion, three hundred forty-three million, four hundred thirty-two thousand, two hundred seventeen".