205216303 has 2 divisors, whose sum is σ = 205216304. Its totient is φ = 205216302.

The previous prime is 205216301. The next prime is 205216331. The reversal of 205216303 is 303612502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205216303 - 2¹ = 205216301 is a prime.

It is a super-2 number, since 2×205216303² = 84227462033975618, which contains 22 as substring.

Together with 205216301, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205216301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102608151 + 102608152.

It is an arithmetic number, because the mean of its divisors is an integer number (102608152).

Almost surely, 2^205216303 is an apocalyptic number.

205216303 is a deficient number, since it is larger than the sum of its proper divisors (1).

205216303 is an equidigital number, since it uses as much as digits as its factorization.

205216303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 205216303 is about 14325.3727002127. The cubic root of 205216303 is about 589.8441635731.

Adding to 205216303 its reverse (303612502), we get a palindrome (508828805).

The spelling of 205216303 in words is "two hundred five million, two hundred sixteen thousand, three hundred three".