12784831 has 2 divisors, whose sum is σ = 12784832. Its totient is φ = 12784830.

The previous prime is 12784829. The next prime is 12784843. The reversal of 12784831 is 13848721.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13848721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12784831 - 2¹ = 12784829 is a prime.

It is a super-2 number, since 2×12784831² = 326903807397122, which contains 22 as substring.

Together with 12784829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12784231) 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, 6392415 + 6392416.

It is an arithmetic number, because the mean of its divisors is an integer number (6392416).

Almost surely, 2^12784831 is an apocalyptic number.

12784831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12784831 is an equidigital number, since it uses as much as digits as its factorization.

12784831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 34.

The square root of 12784831 is about 3575.5882033590. The cubic root of 12784831 is about 233.8289774783.

The spelling of 12784831 in words is "twelve million, seven hundred eighty-four thousand, eight hundred thirty-one".