1312578479 has 2 divisors, whose sum is σ = 1312578480. Its totient is φ = 1312578478.

The previous prime is 1312578451. The next prime is 1312578481. The reversal of 1312578479 is 9748752131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312578479 is a prime.

It is a super-3 number, since 3×1312578479³ (a number of 28 digits) contains 333 as substring.

Together with 1312578481, 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 (1312578499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656289239 + 656289240.

It is an arithmetic number, because the mean of its divisors is an integer number (656289240).

Almost surely, 2^1312578479 is an apocalyptic number.

1312578479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312578479 is an equidigital number, since it uses as much as digits as its factorization.

1312578479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The square root of 1312578479 is about 36229.5249623839. The cubic root of 1312578479 is about 1094.9016067772.

The spelling of 1312578479 in words is "one billion, three hundred twelve million, five hundred seventy-eight thousand, four hundred seventy-nine".