216240083 has 6 divisors (see below), whose sum is σ = 228220524. Its totient is φ = 204858684.

The previous prime is 216240071. The next prime is 216240113. The reversal of 216240083 is 380042612.

It is not a de Polignac number, because 216240083 - 2¹⁸ = 215977939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216240023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 299141 + ... + 299862.

It is an arithmetic number, because the mean of its divisors is an integer number (38036754).

Almost surely, 2^216240083 is an apocalyptic number.

216240083 is a deficient number, since it is larger than the sum of its proper divisors (11980441).

216240083 is an equidigital number, since it uses as much as digits as its factorization.

216240083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599041 (or 599022 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 216240083 is about 14705.1039778711. The cubic root of 216240083 is about 600.2222167634. Note that the first 4 decimals are identical.

Adding to 216240083 its reverse (380042612), we get a palindrome (596282695).

The spelling of 216240083 in words is "two hundred sixteen million, two hundred forty thousand, eighty-three".