216307011 has 4 divisors (see below), whose sum is σ = 288409352. Its totient is φ = 144204672.

The previous prime is 216307009. The next prime is 216307033. The reversal of 216307011 is 110703612.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 216307011 - 2¹ = 216307009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216307211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36051166 + ... + 36051171.

It is an arithmetic number, because the mean of its divisors is an integer number (72102338).

Almost surely, 2^216307011 is an apocalyptic number.

216307011 is a deficient number, since it is larger than the sum of its proper divisors (72102341).

216307011 is an equidigital number, since it uses as much as digits as its factorization.

216307011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72102340.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 216307011 is about 14707.3794742639. The cubic root of 216307011 is about 600.2841348688.

The spelling of 216307011 in words is "two hundred sixteen million, three hundred seven thousand, eleven".