240532217 has 4 divisors (see below), whose sum is σ = 240563700. Its totient is φ = 240500736.

The previous prime is 240532163. The next prime is 240532247. The reversal of 240532217 is 712235042.

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, and also an emirpimes, since its reverse is a distinct semiprime: 712235042 = 2 ⋅356117521.

It can be written as a sum of positive squares in 2 ways, for example, as 136165561 + 104366656 = 11669^2 + 10216^2 .

It is a cyclic number.

It is not a de Polignac number, because 240532217 - 2⁸ = 240531961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240532247) 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 3 ways as a sum of consecutive naturals, for example, 3833 + ... + 22265.

It is an arithmetic number, because the mean of its divisors is an integer number (60140925).

Almost surely, 2^240532217 is an apocalyptic number.

It is an amenable number.

240532217 is a deficient number, since it is larger than the sum of its proper divisors (31483).

240532217 is a wasteful number, since it uses less digits than its factorization.

240532217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31482.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 240532217 is about 15509.1011022561. The cubic root of 240532217 is about 621.9055292605.

Adding to 240532217 its reverse (712235042), we get a palindrome (952767259).

The spelling of 240532217 in words is "two hundred forty million, five hundred thirty-two thousand, two hundred seventeen".