12427319 has 2 divisors, whose sum is σ = 12427320. Its totient is φ = 12427318.

The previous prime is 12427309. The next prime is 12427321. The reversal of 12427319 is 91372421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12427319 - 2²⁰ = 11378743 is a prime.

It is a super-2 number, since 2×12427319² = 308876515055522, which contains 22 as substring.

Together with 12427321, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12427291 and 12427300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12427309) 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, 6213659 + 6213660.

It is an arithmetic number, because the mean of its divisors is an integer number (6213660).

Almost surely, 2^12427319 is an apocalyptic number.

12427319 is a deficient number, since it is larger than the sum of its proper divisors (1).

12427319 is an equidigital number, since it uses as much as digits as its factorization.

12427319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 12427319 is about 3525.2402754990. The cubic root of 12427319 is about 231.6287599647.

The spelling of 12427319 in words is "twelve million, four hundred twenty-seven thousand, three hundred nineteen".