12943519 has 2 divisors, whose sum is σ = 12943520. Its totient is φ = 12943518.

The previous prime is 12943517. The next prime is 12943531. The reversal of 12943519 is 91534921.

It is a weak prime.

It is an emirp because it is prime and its reverse (91534921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12943519 - 2¹ = 12943517 is a prime.

It is a super-2 number, since 2×12943519² = 335069368206722, which contains 22 as substring.

Together with 12943517, 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 (12943517) 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, 6471759 + 6471760.

It is an arithmetic number, because the mean of its divisors is an integer number (6471760).

Almost surely, 2^12943519 is an apocalyptic number.

12943519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12943519 is an equidigital number, since it uses as much as digits as its factorization.

12943519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 34.

The square root of 12943519 is about 3597.7102440302. The cubic root of 12943519 is about 234.7924468915.

The spelling of 12943519 in words is "twelve million, nine hundred forty-three thousand, five hundred nineteen".