12403871 has 2 divisors, whose sum is σ = 12403872. Its totient is φ = 12403870.

The previous prime is 12403849. The next prime is 12403879. The reversal of 12403871 is 17830421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12403871 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12403871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12403879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201935 + 6201936.

It is an arithmetic number, because the mean of its divisors is an integer number (6201936).

Almost surely, 2^12403871 is an apocalyptic number.

12403871 is a deficient number, since it is larger than the sum of its proper divisors (1).

12403871 is an equidigital number, since it uses as much as digits as its factorization.

12403871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12403871 is about 3521.9129745069. The cubic root of 12403871 is about 231.4829883613.

The spelling of 12403871 in words is "twelve million, four hundred three thousand, eight hundred seventy-one".