216327311 has 2 divisors, whose sum is σ = 216327312. Its totient is φ = 216327310.

The previous prime is 216327277. The next prime is 216327337. The reversal of 216327311 is 113723612.

It is an a-pointer prime, because the next prime (216327337) can be obtained adding 216327311 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216327311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216327341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108163655 + 108163656.

It is an arithmetic number, because the mean of its divisors is an integer number (108163656).

Almost surely, 2^216327311 is an apocalyptic number.

216327311 is a deficient number, since it is larger than the sum of its proper divisors (1).

216327311 is an equidigital number, since it uses as much as digits as its factorization.

216327311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 26.

The square root of 216327311 is about 14708.0695878147. The cubic root of 216327311 is about 600.3029127881.

The spelling of 216327311 in words is "two hundred sixteen million, three hundred twenty-seven thousand, three hundred eleven".