2021323043 has 2 divisors, whose sum is σ = 2021323044. Its totient is φ = 2021323042.

The previous prime is 2021323027. The next prime is 2021323079. The reversal of 2021323043 is 3403231202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021323043 - 2⁴ = 2021323027 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021323093) 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 as a sum of consecutive naturals, namely, 1010661521 + 1010661522.

It is an arithmetic number, because the mean of its divisors is an integer number (1010661522).

Almost surely, 2^2021323043 is an apocalyptic number.

2021323043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021323043 is an equidigital number, since it uses as much as digits as its factorization.

2021323043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2021323043 is about 44959.1263593945. The cubic root of 2021323043 is about 1264.3827894065.

Adding to 2021323043 its reverse (3403231202), we get a palindrome (5424554245).

The spelling of 2021323043 in words is "two billion, twenty-one million, three hundred twenty-three thousand, forty-three".