320221023 has 4 divisors (see below), whose sum is σ = 426961368. Its totient is φ = 213480680.

The previous prime is 320221007. The next prime is 320221063. The reversal of 320221023 is 320122023.

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

It is a cyclic number.

It is not a de Polignac number, because 320221023 - 2⁴ = 320221007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320220993 and 320221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320221063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53370168 + ... + 53370173.

It is an arithmetic number, because the mean of its divisors is an integer number (106740342).

Almost surely, 2^320221023 is an apocalyptic number.

320221023 is a deficient number, since it is larger than the sum of its proper divisors (106740345).

320221023 is a wasteful number, since it uses less digits than its factorization.

320221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106740344.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 320221023 is about 17894.7205342805. The cubic root of 320221023 is about 684.1478191007.

Adding to 320221023 its reverse (320122023), we get a palindrome (640343046).

The spelling of 320221023 in words is "three hundred twenty million, two hundred twenty-one thousand, twenty-three".