240216233 has 4 divisors (see below), whose sum is σ = 240248148. Its totient is φ = 240184320.

The previous prime is 240216227. The next prime is 240216257. The reversal of 240216233 is 332612042.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 62047129 + 178169104 = 7877^2 + 13348^2 .

It is a cyclic number.

It is not a de Polignac number, because 240216233 - 2²⁰ = 239167657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 240216199 and 240216208.

It is not an unprimeable number, because it can be changed into a prime (240216203) 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, 2285 + ... + 22037.

It is an arithmetic number, because the mean of its divisors is an integer number (60062037).

Almost surely, 2^240216233 is an apocalyptic number.

It is an amenable number.

240216233 is a deficient number, since it is larger than the sum of its proper divisors (31915).

240216233 is a wasteful number, since it uses less digits than its factorization.

240216233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31914.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 240216233 is about 15498.9107036591. The cubic root of 240216233 is about 621.6330802252.

Adding to 240216233 its reverse (332612042), we get a palindrome (572828275).

The spelling of 240216233 in words is "two hundred forty million, two hundred sixteen thousand, two hundred thirty-three".