2021323130 has 16 divisors (see below), whose sum is σ = 3638895624. Its totient is φ = 808415040.

The previous prime is 2021323121. The next prime is 2021323159. The reversal of 2021323130 is 313231202.

It can be written as a sum of positive squares in 4 ways, for example, as 732297721 + 1289025409 = 27061^2 + 35903^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2021323099 and 2021323108.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 121940 + ... + 137520.

Almost surely, 2^2021323130 is an apocalyptic number.

2021323130 is a deficient number, since it is larger than the sum of its proper divisors (1617572494).

2021323130 is a wasteful number, since it uses less digits than its factorization.

2021323130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28561.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2021323130 is about 44959.1273269400. The cubic root of 2021323130 is about 1264.3828075466.

Adding to 2021323130 its reverse (313231202), we get a palindrome (2334554332).

The spelling of 2021323130 in words is "two billion, twenty-one million, three hundred twenty-three thousand, one hundred thirty".