12784313 has 2 divisors, whose sum is σ = 12784314. Its totient is φ = 12784312.

The previous prime is 12784301. The next prime is 12784339. The reversal of 12784313 is 31348721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10942864 + 1841449 = 3308^2 + 1357^2 .

It is a cyclic number.

It is not a de Polignac number, because 12784313 - 2⁶ = 12784249 is a prime.

It is not a weakly prime, because it can be changed into another prime (12784363) 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, 6392156 + 6392157.

It is an arithmetic number, because the mean of its divisors is an integer number (6392157).

Almost surely, 2^12784313 is an apocalyptic number.

It is an amenable number.

12784313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12784313 is an equidigital number, since it uses as much as digits as its factorization.

12784313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 12784313 is about 3575.5157669908. The cubic root of 12784313 is about 233.8258194377.

The spelling of 12784313 in words is "twelve million, seven hundred eighty-four thousand, three hundred thirteen".