12810247 has 2 divisors, whose sum is σ = 12810248. Its totient is φ = 12810246.

The previous prime is 12810229. The next prime is 12810263. The reversal of 12810247 is 74201821.

It is a happy number.

12810247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12810247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12810647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6405123 + 6405124.

It is an arithmetic number, because the mean of its divisors is an integer number (6405124).

Almost surely, 2^12810247 is an apocalyptic number.

12810247 is a deficient number, since it is larger than the sum of its proper divisors (1).

12810247 is an equidigital number, since it uses as much as digits as its factorization.

12810247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12810247 is about 3579.1405392915. The cubic root of 12810247 is about 233.9838240943.

The spelling of 12810247 in words is "twelve million, eight hundred ten thousand, two hundred forty-seven".