2021031530 has 32 divisors (see below), whose sum is σ = 4185475200. Its totient is φ = 688271040.

The previous prime is 2021031521. The next prime is 2021031533. The reversal of 2021031530 is 351301202.

It is a junction number, because it is equal to n+sod(n) for n = 2021031499 and 2021031508.

It is not an unprimeable number, because it can be changed into a prime (2021031533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86456 + ... + 107315.

It is an arithmetic number, because the mean of its divisors is an integer number (130796100).

Almost surely, 2^2021031530 is an apocalyptic number.

2021031530 is an abundant number, since it is smaller than the sum of its proper divisors (2164443670).

2021031530 is a wasteful number, since it uses less digits than its factorization.

2021031530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193934.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 2021031530 is about 44955.8842644653. The cubic root of 2021031530 is about 1264.3220038496.

Adding to 2021031530 its reverse (351301202), we get a palindrome (2372332732).

The spelling of 2021031530 in words is "two billion, twenty-one million, thirty-one thousand, five hundred thirty".