320455105 has 4 divisors (see below), whose sum is σ = 384546132. Its totient is φ = 256364080.

The previous prime is 320455103. The next prime is 320455189. The reversal of 320455105 is 501554023.

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 188457984 + 131997121 = 13728^2 + 11489^2 .

It is not a de Polignac number, because 320455105 - 2¹ = 320455103 is a prime.

It is a super-2 number, since 2×320455105² = 205382948641122050, which contains 22 as substring.

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 320455105.

It is not an unprimeable number, because it can be changed into a prime (320455103) 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, 32045506 + ... + 32045515.

It is an arithmetic number, because the mean of its divisors is an integer number (96136533).

Almost surely, 2^320455105 is an apocalyptic number.

It is an amenable number.

320455105 is a deficient number, since it is larger than the sum of its proper divisors (64091027).

320455105 is an equidigital number, since it uses as much as digits as its factorization.

320455105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64091026.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 320455105 is about 17901.2598718638. The cubic root of 320455105 is about 684.3144828232.

The spelling of 320455105 in words is "three hundred twenty million, four hundred fifty-five thousand, one hundred five".