216357263 has 2 divisors, whose sum is σ = 216357264. Its totient is φ = 216357262.

The previous prime is 216357247. The next prime is 216357293. The reversal of 216357263 is 362753612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216357263 - 2⁴ = 216357247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216357293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108178631 + 108178632.

It is an arithmetic number, because the mean of its divisors is an integer number (108178632).

Almost surely, 2^216357263 is an apocalyptic number.

216357263 is a deficient number, since it is larger than the sum of its proper divisors (1).

216357263 is an equidigital number, since it uses as much as digits as its factorization.

216357263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 216357263 is about 14709.0877691310. The cubic root of 216357263 is about 600.3306168614.

The spelling of 216357263 in words is "two hundred sixteen million, three hundred fifty-seven thousand, two hundred sixty-three".