2021030320 has 40 divisors (see below), whose sum is σ = 4700998224. Its totient is φ = 808050432.

The previous prime is 2021030311. The next prime is 2021030327. The reversal of 2021030320 is 230301202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2021030320.

It is not an unprimeable number, because it can be changed into a prime (2021030327) 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, 241242 + ... + 249478.

Almost surely, 2^2021030320 is an apocalyptic number.

2021030320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021030320 is an abundant number, since it is smaller than the sum of its proper divisors (2679967904).

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

2021030320 is a wasteful number, since it uses less digits than its factorization.

2021030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11317 (or 11311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2021030320 is about 44955.8708068257. The cubic root of 2021030320 is about 1264.3217515313.

Adding to 2021030320 its reverse (230301202), we get a palindrome (2251331522).

The spelling of 2021030320 in words is "two billion, twenty-one million, thirty thousand, three hundred twenty".