312083279 has 2 divisors, whose sum is σ = 312083280. Its totient is φ = 312083278.

The previous prime is 312083257. The next prime is 312083333. The reversal of 312083279 is 972380213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312083279 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 (312083179) 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, 156041639 + 156041640.

It is an arithmetic number, because the mean of its divisors is an integer number (156041640).

Almost surely, 2^312083279 is an apocalyptic number.

312083279 is a deficient number, since it is larger than the sum of its proper divisors (1).

312083279 is an equidigital number, since it uses as much as digits as its factorization.

312083279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 312083279 is about 17665.8789478475. The cubic root of 312083279 is about 678.3026286827.

The spelling of 312083279 in words is "three hundred twelve million, eighty-three thousand, two hundred seventy-nine".