312263647 has 2 divisors, whose sum is σ = 312263648. Its totient is φ = 312263646.

The previous prime is 312263641. The next prime is 312263657. The reversal of 312263647 is 746362213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312263647 - 2⁷ = 312263519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312263641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156131823 + 156131824.

It is an arithmetic number, because the mean of its divisors is an integer number (156131824).

Almost surely, 2^312263647 is an apocalyptic number.

312263647 is a deficient number, since it is larger than the sum of its proper divisors (1).

312263647 is an equidigital number, since it uses as much as digits as its factorization.

312263647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

The square root of 312263647 is about 17670.9831927938. The cubic root of 312263647 is about 678.4332781331.

The spelling of 312263647 in words is "three hundred twelve million, two hundred sixty-three thousand, six hundred forty-seven".