320131021321 has 8 divisors (see below), whose sum is σ = 320927235200. Its totient is φ = 319335112800.

The previous prime is 320131021319. The next prime is 320131021349. The reversal of 320131021321 is 123120131023.

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 320131021321 - 2¹ = 320131021319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320131021121) 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 7 ways as a sum of consecutive naturals, for example, 2099845 + ... + 2247133.

It is an arithmetic number, because the mean of its divisors is an integer number (40115904400).

Almost surely, 2^320131021321 is an apocalyptic number.

It is an amenable number.

320131021321 is a deficient number, since it is larger than the sum of its proper divisors (796213879).

320131021321 is a wasteful number, since it uses less digits than its factorization.

320131021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152679.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 320131021321 its reverse (123120131023), we get a palindrome (443251152344).

The spelling of 320131021321 in words is "three hundred twenty billion, one hundred thirty-one million, twenty-one thousand, three hundred twenty-one".