320908255 has 4 divisors (see below), whose sum is σ = 385089912. Its totient is φ = 256726600.

The previous prime is 320908223. The next prime is 320908261. The reversal of 320908255 is 552809023.

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

It is not a de Polignac number, because 320908255 - 2⁵ = 320908223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320908255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32090821 + ... + 32090830.

It is an arithmetic number, because the mean of its divisors is an integer number (96272478).

Almost surely, 2^320908255 is an apocalyptic number.

320908255 is a deficient number, since it is larger than the sum of its proper divisors (64181657).

320908255 is an equidigital number, since it uses as much as digits as its factorization.

320908255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64181656.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 320908255 is about 17913.9123309231. The cubic root of 320908255 is about 684.6368899770.

The spelling of 320908255 in words is "three hundred twenty million, nine hundred eight thousand, two hundred fifty-five".