320227217 has 4 divisors (see below), whose sum is σ = 320428836. Its totient is φ = 320025600.

The previous prime is 320227213. The next prime is 320227223. The reversal of 320227217 is 712722023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 200958976 + 119268241 = 14176^2 + 10921^2 .

It is a cyclic number.

It is not a de Polignac number, because 320227217 - 2² = 320227213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320227213) 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 in 3 ways as a sum of consecutive naturals, for example, 98408 + ... + 101609.

It is an arithmetic number, because the mean of its divisors is an integer number (80107209).

Almost surely, 2^320227217 is an apocalyptic number.

It is an amenable number.

320227217 is a deficient number, since it is larger than the sum of its proper divisors (201619).

320227217 is a wasteful number, since it uses less digits than its factorization.

320227217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201618.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 320227217 is about 17894.8936012484. The cubic root of 320227217 is about 684.1522302043.

The spelling of 320227217 in words is "three hundred twenty million, two hundred twenty-seven thousand, two hundred seventeen".