312304709 has 2 divisors, whose sum is σ = 312304710. Its totient is φ = 312304708.

The previous prime is 312304703. The next prime is 312304721. The reversal of 312304709 is 907403213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206008609 + 106296100 = 14353^2 + 10310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312304709 is a 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 (312304703) 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, 156152354 + 156152355.

It is an arithmetic number, because the mean of its divisors is an integer number (156152355).

Almost surely, 2^312304709 is an apocalyptic number.

It is an amenable number.

312304709 is a deficient number, since it is larger than the sum of its proper divisors (1).

312304709 is an equidigital number, since it uses as much as digits as its factorization.

312304709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 312304709 is about 17672.1450028003. The cubic root of 312304709 is about 678.4630143368.

The spelling of 312304709 in words is "three hundred twelve million, three hundred four thousand, seven hundred nine".