216306011 has 8 divisors (see below), whose sum is σ = 229581504. Its totient is φ = 203091840.

The previous prime is 216305987. The next prime is 216306043. The reversal of 216306011 is 110603612.

216306011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216306011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216300011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7955 + ... + 22268.

It is an arithmetic number, because the mean of its divisors is an integer number (28697688).

Almost surely, 2^216306011 is an apocalyptic number.

216306011 is a deficient number, since it is larger than the sum of its proper divisors (13275493).

216306011 is a wasteful number, since it uses less digits than its factorization.

216306011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30661.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 216306011 is about 14707.3454776856. The cubic root of 216306011 is about 600.2832098178.

Adding to 216306011 its reverse (110603612), we get a palindrome (326909623).

The spelling of 216306011 in words is "two hundred sixteen million, three hundred six thousand, eleven".