1312224239 has 2 divisors, whose sum is σ = 1312224240. Its totient is φ = 1312224238.

The previous prime is 1312224167. The next prime is 1312224241. The reversal of 1312224239 is 9324222131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312224239 is a prime.

It is a Sophie Germain prime.

Together with 1312224241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312224269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656112119 + 656112120.

It is an arithmetic number, because the mean of its divisors is an integer number (656112120).

Almost surely, 2^1312224239 is an apocalyptic number.

1312224239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312224239 is an equidigital number, since it uses as much as digits as its factorization.

1312224239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 1312224239 is about 36224.6358021720. The cubic root of 1312224239 is about 1094.8031001994.

The spelling of 1312224239 in words is "one billion, three hundred twelve million, two hundred twenty-four thousand, two hundred thirty-nine".