320106217 has 6 divisors (see below), whose sum is σ = 330766314. Its totient is φ = 309779280.

The previous prime is 320106191. The next prime is 320106221. The reversal of 320106217 is 712601023.

It can be written as a sum of positive squares in only one way, i.e., 313325401 + 6780816 = 17701^2 + 2604^2 .

It is a de Polignac number, because none of the positive numbers 2^k-320106217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320104217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165588 + ... + 167509.

It is an arithmetic number, because the mean of its divisors is an integer number (55127719).

Almost surely, 2^320106217 is an apocalyptic number.

It is an amenable number.

320106217 is a deficient number, since it is larger than the sum of its proper divisors (10660097).

320106217 is an equidigital number, since it uses as much as digits as its factorization.

320106217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333159 (or 333128 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 320106217 is about 17891.5124290821. The cubic root of 320106217 is about 684.0660488469.

The spelling of 320106217 in words is "three hundred twenty million, one hundred six thousand, two hundred seventeen".