320023304021 has 8 divisors (see below), whose sum is σ = 328513610880. Its totient is φ = 311643981792.

The previous prime is 320023304011. The next prime is 320023304039. The reversal of 320023304021 is 120403320023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320023304021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320023303984 and 320023304002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320023304011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27740315 + ... + 27751848.

It is an arithmetic number, because the mean of its divisors is an integer number (41064201360).

Almost surely, 2^320023304021 is an apocalyptic number.

It is an amenable number.

320023304021 is a deficient number, since it is larger than the sum of its proper divisors (8490306859).

320023304021 is an equidigital number, since it uses as much as digits as its factorization.

320023304021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55492315.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 320023304021 its reverse (120403320023), we get a palindrome (440426624044).

The spelling of 320023304021 in words is "three hundred twenty billion, twenty-three million, three hundred four thousand, twenty-one".