2021311043 has 2 divisors, whose sum is σ = 2021311044. Its totient is φ = 2021311042.

The previous prime is 2021311027. The next prime is 2021311051. The reversal of 2021311043 is 3401131202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021311043 - 2⁴ = 2021311027 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021311013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010655521 + 1010655522.

It is an arithmetic number, because the mean of its divisors is an integer number (1010655522).

Almost surely, 2^2021311043 is an apocalyptic number.

2021311043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021311043 is an equidigital number, since it uses as much as digits as its factorization.

2021311043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2021311043 is about 44958.9929046459. The cubic root of 2021311043 is about 1264.3802873120.

Adding to 2021311043 its reverse (3401131202), we get a palindrome (5422442245).

The spelling of 2021311043 in words is "two billion, twenty-one million, three hundred eleven thousand, forty-three".