320475217 has 4 divisors (see below), whose sum is σ = 320814576. Its totient is φ = 320135860.

The previous prime is 320475191. The next prime is 320475227. The reversal of 320475217 is 712574023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320475217 - 2¹⁵ = 320442449 is a prime.

It is a super-2 number, since 2×320475217² = 205408729422394178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320475227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168259 + ... + 170152.

It is an arithmetic number, because the mean of its divisors is an integer number (80203644).

Almost surely, 2^320475217 is an apocalyptic number.

It is an amenable number.

320475217 is a deficient number, since it is larger than the sum of its proper divisors (339359).

320475217 is an equidigital number, since it uses as much as digits as its factorization.

320475217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339358.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 320475217 is about 17901.8216112216. The cubic root of 320475217 is about 684.3287985519.

The spelling of 320475217 in words is "three hundred twenty million, four hundred seventy-five thousand, two hundred seventeen".