312020347 has 2 divisors, whose sum is σ = 312020348. Its totient is φ = 312020346.

The previous prime is 312020327. The next prime is 312020393. The reversal of 312020347 is 743020213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312020347 - 2¹⁵ = 311987579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312020327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010173 + 156010174.

It is an arithmetic number, because the mean of its divisors is an integer number (156010174).

Almost surely, 2^312020347 is an apocalyptic number.

312020347 is a deficient number, since it is larger than the sum of its proper divisors (1).

312020347 is an equidigital number, since it uses as much as digits as its factorization.

312020347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 312020347 is about 17664.0976842861. The cubic root of 312020347 is about 678.2570320813.

The spelling of 312020347 in words is "three hundred twelve million, twenty thousand, three hundred forty-seven".