12406531271 has 2 divisors, whose sum is σ = 12406531272. Its totient is φ = 12406531270.

The previous prime is 12406531253. The next prime is 12406531273. The reversal of 12406531271 is 17213560421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12406531271 - 2¹⁰ = 12406530247 is a prime.

Together with 12406531273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12406531273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6203265635 + 6203265636.

It is an arithmetic number, because the mean of its divisors is an integer number (6203265636).

Almost surely, 2^12406531271 is an apocalyptic number.

12406531271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12406531271 is an equidigital number, since it uses as much as digits as its factorization.

12406531271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 12406531271 in words is "twelve billion, four hundred six million, five hundred thirty-one thousand, two hundred seventy-one".