320023104021 has 12 divisors (see below), whose sum is σ = 478195443180. Its totient is φ = 205991882880.

The previous prime is 320023103999. The next prime is 320023104077. The reversal of 320023104021 is 120401320023.

320023104021 is a `hidden beast` number, since 32 + 0 + 0 + 231 + 0 + 402 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 229278168900 + 90744935121 = 478830^2 + 301239^2 .

It is not a de Polignac number, because 320023104021 - 2⁷ = 320023103893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320023103985 and 320023104003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320023104091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613070820 + ... + 613071341.

It is an arithmetic number, because the mean of its divisors is an integer number (39849620265).

Almost surely, 2^320023104021 is an apocalyptic number.

It is an amenable number.

320023104021 is a deficient number, since it is larger than the sum of its proper divisors (158172339159).

320023104021 is a wasteful number, since it uses less digits than its factorization.

320023104021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226142196 (or 1226142193 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 320023104021 its reverse (120401320023), we get a palindrome (440424424044).

The spelling of 320023104021 in words is "three hundred twenty billion, twenty-three million, one hundred four thousand, twenty-one".