12823519 has 2 divisors, whose sum is σ = 12823520. Its totient is φ = 12823518.

The previous prime is 12823513. The next prime is 12823541. The reversal of 12823519 is 91532821.

It is a weak prime.

It is an emirp because it is prime and its reverse (91532821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12823519 - 2³ = 12823511 is a prime.

It is a super-2 number, since 2×12823519² = 328885279086722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12823511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6411759 + 6411760.

It is an arithmetic number, because the mean of its divisors is an integer number (6411760).

Almost surely, 2^12823519 is an apocalyptic number.

12823519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12823519 is an equidigital number, since it uses as much as digits as its factorization.

12823519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 12823519 is about 3580.9941357115. The cubic root of 12823519 is about 234.0646021743.

The spelling of 12823519 in words is "twelve million, eight hundred twenty-three thousand, five hundred nineteen".