320021023 has 8 divisors (see below), whose sum is σ = 366392448. Its totient is φ = 273813144.

The previous prime is 320021017. The next prime is 320021027. The reversal of 320021023 is 320120023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320021023 - 2¹⁷ = 319889951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320020994 and 320021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320021027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36661 + ... + 44542.

It is an arithmetic number, because the mean of its divisors is an integer number (45799056).

Almost surely, 2^320021023 is an apocalyptic number.

320021023 is a deficient number, since it is larger than the sum of its proper divisors (46371425).

320021023 is an equidigital number, since it uses as much as digits as its factorization.

320021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81773.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320021023 is about 17889.1314210612. The cubic root of 320021023 is about 684.0053570195.

Adding to 320021023 its reverse (320120023), we get a palindrome (640141046).

The spelling of 320021023 in words is "three hundred twenty million, twenty-one thousand, twenty-three".