216245303 has 2 divisors, whose sum is σ = 216245304. Its totient is φ = 216245302.

The previous prime is 216245299. The next prime is 216245311. The reversal of 216245303 is 303542612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216245303 - 2² = 216245299 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216245803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108122651 + 108122652.

It is an arithmetic number, because the mean of its divisors is an integer number (108122652).

Almost surely, 2^216245303 is an apocalyptic number.

216245303 is a deficient number, since it is larger than the sum of its proper divisors (1).

216245303 is an equidigital number, since it uses as much as digits as its factorization.

216245303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 216245303 is about 14705.2814661944. The cubic root of 216245303 is about 600.2270464797.

Adding to 216245303 its reverse (303542612), we get a palindrome (519787915).

The spelling of 216245303 in words is "two hundred sixteen million, two hundred forty-five thousand, three hundred three".