12823819 has 2 divisors, whose sum is σ = 12823820. Its totient is φ = 12823818.

The previous prime is 12823817. The next prime is 12823859. The reversal of 12823819 is 91832821.

12823819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12823819 - 2¹ = 12823817 is a prime.

It is a super-2 number, since 2×12823819² = 328900667489522, which contains 22 as substring.

Together with 12823817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12823817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6411909 + 6411910.

It is an arithmetic number, because the mean of its divisors is an integer number (6411910).

Almost surely, 2^12823819 is an apocalyptic number.

12823819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12823819 is an equidigital number, since it uses as much as digits as its factorization.

12823819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 12823819 is about 3581.0360232759. The cubic root of 12823819 is about 234.0664274360.

The spelling of 12823819 in words is "twelve million, eight hundred twenty-three thousand, eight hundred nineteen".