320220203322331 has 12 divisors (see below), whose sum is σ = 346747953692280. Its totient is φ = 295587340439040.

The previous prime is 320220203322329. The next prime is 320220203322353. The reversal of 320220203322331 is 133223302022023.

It is a happy number.

It is not a de Polignac number, because 320220203322331 - 2¹ = 320220203322329 is a prime.

It is a super-2 number, since 2×320220203322331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320220203322331.

It is not an unprimeable number, because it can be changed into a prime (320220200322331) 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, 113959675 + ... + 116735803.

It is an arithmetic number, because the mean of its divisors is an integer number (28895662807690).

Almost surely, 2^{320220203322331} is an apocalyptic number.

320220203322331 is a deficient number, since it is larger than the sum of its proper divisors (26527750369949).

320220203322331 is a wasteful number, since it uses less digits than its factorization.

320220203322331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458686 (or 3458673 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 320220203322331 its reverse (133223302022023), we get a palindrome (453443505344354).

The spelling of 320220203322331 in words is "three hundred twenty trillion, two hundred twenty billion, two hundred three million, three hundred twenty-two thousand, three hundred thirty-one".