320221020031 has 24 divisors (see below), whose sum is σ = 373956780960. Its totient is φ = 273475097280.

The previous prime is 320221020029. The next prime is 320221020083. The reversal of 320221020031 is 130020122023.

It is not a de Polignac number, because 320221020031 - 2¹ = 320221020029 is a prime.

It is a super-2 number, since 2×320221020031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320221019987 and 320221020014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320221020631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1103371 + ... + 1363036.

It is an arithmetic number, because the mean of its divisors is an integer number (15581532540).

Almost surely, 2^320221020031 is an apocalyptic number.

320221020031 is a deficient number, since it is larger than the sum of its proper divisors (53735760929).

320221020031 is a wasteful number, since it uses less digits than its factorization.

320221020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466495 (or 2466484 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 320221020031 its reverse (130020122023), we get a palindrome (450241142054).

The spelling of 320221020031 in words is "three hundred twenty billion, two hundred twenty-one million, twenty thousand, thirty-one".