12340271 has 2 divisors, whose sum is σ = 12340272. Its totient is φ = 12340270.

The previous prime is 12340199. The next prime is 12340309. The reversal of 12340271 is 17204321.

It is a strong prime.

It is an emirp because it is prime and its reverse (17204321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12340271 - 2¹⁴ = 12323887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12340171) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170135 + 6170136.

It is an arithmetic number, because the mean of its divisors is an integer number (6170136).

Almost surely, 2^12340271 is an apocalyptic number.

12340271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340271 is an equidigital number, since it uses as much as digits as its factorization.

12340271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12340271 is about 3512.8721866871. The cubic root of 12340271 is about 231.0866724977.

Adding to 12340271 its reverse (17204321), we get a palindrome (29544592).

The spelling of 12340271 in words is "twelve million, three hundred forty thousand, two hundred seventy-one".