12471871 has 2 divisors, whose sum is σ = 12471872. Its totient is φ = 12471870.

The previous prime is 12471869. The next prime is 12471881. The reversal of 12471871 is 17817421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12471871 - 2¹ = 12471869 is a prime.

Together with 12471869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12471841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6235935 + 6235936.

It is an arithmetic number, because the mean of its divisors is an integer number (6235936).

Almost surely, 2^12471871 is an apocalyptic number.

12471871 is a deficient number, since it is larger than the sum of its proper divisors (1).

12471871 is an equidigital number, since it uses as much as digits as its factorization.

12471871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 31.

The square root of 12471871 is about 3531.5536241150. The cubic root of 12471871 is about 231.9052265989.

The spelling of 12471871 in words is "twelve million, four hundred seventy-one thousand, eight hundred seventy-one".