312020017 has 2 divisors, whose sum is σ = 312020018. Its totient is φ = 312020016.

The previous prime is 312020011. The next prime is 312020029. The reversal of 312020017 is 710020213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269977761 + 42042256 = 16431^2 + 6484^2 .

It is a cyclic number.

It is not a de Polignac number, because 312020017 - 2⁷ = 312019889 is a prime.

It is not a weakly prime, because it can be changed into another prime (312020011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010008 + 156010009.

It is an arithmetic number, because the mean of its divisors is an integer number (156010009).

Almost surely, 2^312020017 is an apocalyptic number.

It is an amenable number.

312020017 is a deficient number, since it is larger than the sum of its proper divisors (1).

312020017 is an equidigital number, since it uses as much as digits as its factorization.

312020017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 312020017 is about 17664.0883433026. The cubic root of 312020017 is about 678.2567929677.

The spelling of 312020017 in words is "three hundred twelve million, twenty thousand, seventeen".