12810397 has 2 divisors, whose sum is σ = 12810398. Its totient is φ = 12810396.

The previous prime is 12810383. The next prime is 12810407. The reversal of 12810397 is 79301821.

12810397 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 can be written as a sum of positive squares in only one way, i.e., 12809241 + 1156 = 3579^2 + 34^2 .

It is a cyclic number.

It is not a de Polignac number, because 12810397 - 2⁷ = 12810269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12810337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6405198 + 6405199.

It is an arithmetic number, because the mean of its divisors is an integer number (6405199).

Almost surely, 2^12810397 is an apocalyptic number.

It is an amenable number.

12810397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12810397 is an equidigital number, since it uses as much as digits as its factorization.

12810397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12810397 is about 3579.1614939815. The cubic root of 12810397 is about 233.9847373589.

The spelling of 12810397 in words is "twelve million, eight hundred ten thousand, three hundred ninety-seven".