12857413 has 2 divisors, whose sum is σ = 12857414. Its totient is φ = 12857412.

The previous prime is 12857407. The next prime is 12857431. The reversal of 12857413 is 31475821.

Together with next prime (12857431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12404484 + 452929 = 3522^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 12857413 - 2⁵ = 12857381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12857443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428706 + 6428707.

It is an arithmetic number, because the mean of its divisors is an integer number (6428707).

Almost surely, 2^12857413 is an apocalyptic number.

It is an amenable number.

12857413 is a deficient number, since it is larger than the sum of its proper divisors (1).

12857413 is an equidigital number, since it uses as much as digits as its factorization.

12857413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 12857413 is about 3585.7234974270. The cubic root of 12857413 is about 234.2706404249.

The spelling of 12857413 in words is "twelve million, eight hundred fifty-seven thousand, four hundred thirteen".