320023105 has 4 divisors (see below), whose sum is σ = 384027732. Its totient is φ = 256018480.

The previous prime is 320023073. The next prime is 320023117. The reversal of 320023105 is 501320023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501320023 = 3557 ⋅140939.

It can be written as a sum of positive squares in 2 ways, for example, as 192987664 + 127035441 = 13892^2 + 11271^2 .

It is not a de Polignac number, because 320023105 - 2⁵ = 320023073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32002306 + ... + 32002315.

It is an arithmetic number, because the mean of its divisors is an integer number (96006933).

Almost surely, 2^320023105 is an apocalyptic number.

It is an amenable number.

320023105 is a deficient number, since it is larger than the sum of its proper divisors (64004627).

320023105 is an equidigital number, since it uses as much as digits as its factorization.

320023105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64004626.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 320023105 is about 17889.1896127242. The cubic root of 320023105 is about 684.0068403554.

Adding to 320023105 its reverse (501320023), we get a palindrome (821343128).

The spelling of 320023105 in words is "three hundred twenty million, twenty-three thousand, one hundred five".