12823871 has 2 divisors, whose sum is σ = 12823872. Its totient is φ = 12823870.

The previous prime is 12823859. The next prime is 12823891. The reversal of 12823871 is 17832821.

It is a weak prime.

It is an emirp because it is prime and its reverse (17832821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12823871 - 2¹⁰ = 12822847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12823891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6411935 + 6411936.

It is an arithmetic number, because the mean of its divisors is an integer number (6411936).

Almost surely, 2^12823871 is an apocalyptic number.

12823871 is a deficient number, since it is larger than the sum of its proper divisors (1).

12823871 is an equidigital number, since it uses as much as digits as its factorization.

12823871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 32.

The square root of 12823871 is about 3581.0432837373. The cubic root of 12823871 is about 234.0667438118.

The spelling of 12823871 in words is "twelve million, eight hundred twenty-three thousand, eight hundred seventy-one".