312705479 has 2 divisors, whose sum is σ = 312705480. Its totient is φ = 312705478.

The previous prime is 312705473. The next prime is 312705499. The reversal of 312705479 is 974507213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312705479 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312705473) 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, 156352739 + 156352740.

It is an arithmetic number, because the mean of its divisors is an integer number (156352740).

Almost surely, 2^312705479 is an apocalyptic number.

312705479 is a deficient number, since it is larger than the sum of its proper divisors (1).

312705479 is an equidigital number, since it uses as much as digits as its factorization.

312705479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 312705479 is about 17683.4803983831. The cubic root of 312705479 is about 678.7531064459.

The spelling of 312705479 in words is "three hundred twelve million, seven hundred five thousand, four hundred seventy-nine".