210520030243 has 2 divisors, whose sum is σ = 210520030244. Its totient is φ = 210520030242.

The previous prime is 210520030207. The next prime is 210520030271. The reversal of 210520030243 is 342030025012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210520030243 - 2¹⁷ = 210519899171 is a prime.

It is not a weakly prime, because it can be changed into another prime (214520030243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105260015121 + 105260015122.

It is an arithmetic number, because the mean of its divisors is an integer number (105260015122).

Almost surely, 2^210520030243 is an apocalyptic number.

210520030243 is a deficient number, since it is larger than the sum of its proper divisors (1).

210520030243 is an equidigital number, since it uses as much as digits as its factorization.

210520030243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 210520030243 its reverse (342030025012), we get a palindrome (552550055255).

The spelling of 210520030243 in words is "two hundred ten billion, five hundred twenty million, thirty thousand, two hundred forty-three".