201320243 has 2 divisors, whose sum is σ = 201320244. Its totient is φ = 201320242.

The previous prime is 201320227. The next prime is 201320263. The reversal of 201320243 is 342023102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201320243 - 2⁴ = 201320227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (201320263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100660121 + 100660122.

It is an arithmetic number, because the mean of its divisors is an integer number (100660122).

Almost surely, 2^201320243 is an apocalyptic number.

201320243 is a deficient number, since it is larger than the sum of its proper divisors (1).

201320243 is an equidigital number, since it uses as much as digits as its factorization.

201320243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 201320243 is about 14188.7364835633. The cubic root of 201320243 is about 586.0875311400.

Adding to 201320243 its reverse (342023102), we get a palindrome (543343345).

The spelling of 201320243 in words is "two hundred one million, three hundred twenty thousand, two hundred forty-three".