320112020 has 24 divisors (see below), whose sum is σ = 681706368. Its totient is φ = 126240800.

The previous prime is 320112017. The next prime is 320112031. The reversal of 320112020 is 20211023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320111992 and 320112010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111296 + ... + 114135.

It is an arithmetic number, because the mean of its divisors is an integer number (28404432).

Almost surely, 2^320112020 is an apocalyptic number.

It is an amenable number.

320112020 is an abundant number, since it is smaller than the sum of its proper divisors (361594348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320112020 is a wasteful number, since it uses less digits than its factorization.

320112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225511 (or 225509 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 320112020 is about 17891.6746002156. The cubic root of 320112020 is about 684.0701824866.

Adding to 320112020 its reverse (20211023), we get a palindrome (340323043).

The spelling of 320112020 in words is "three hundred twenty million, one hundred twelve thousand, twenty".