240313217 has 2 divisors, whose sum is σ = 240313218. Its totient is φ = 240313216.

The previous prime is 240313201. The next prime is 240313219. The reversal of 240313217 is 712313042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237653056 + 2660161 = 15416^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 240313217 - 2⁴ = 240313201 is a prime.

Together with 240313219, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240313192 and 240313201.

It is not a weakly prime, because it can be changed into another prime (240313219) 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 as a sum of consecutive naturals, namely, 120156608 + 120156609.

It is an arithmetic number, because the mean of its divisors is an integer number (120156609).

Almost surely, 2^240313217 is an apocalyptic number.

It is an amenable number.

240313217 is a deficient number, since it is larger than the sum of its proper divisors (1).

240313217 is an equidigital number, since it uses as much as digits as its factorization.

240313217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 240313217 is about 15502.0391239346. The cubic root of 240313217 is about 621.7167275710.

Adding to 240313217 its reverse (712313042), we get a palindrome (952626259).

The spelling of 240313217 in words is "two hundred forty million, three hundred thirteen thousand, two hundred seventeen".