240305317 has 4 divisors (see below), whose sum is σ = 274634656. Its totient is φ = 205975980.

The previous prime is 240305287. The next prime is 240305323. The reversal of 240305317 is 713503042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 240305317 - 2⁷ = 240305189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240305291 and 240305300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240305327) 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, 17164659 + ... + 17164672.

It is an arithmetic number, because the mean of its divisors is an integer number (68658664).

Almost surely, 2^240305317 is an apocalyptic number.

It is an amenable number.

240305317 is a deficient number, since it is larger than the sum of its proper divisors (34329339).

240305317 is an equidigital number, since it uses as much as digits as its factorization.

240305317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34329338.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 240305317 is about 15501.7843166521. The cubic root of 240305317 is about 621.7099147734.

Adding to 240305317 its reverse (713503042), we get a palindrome (953808359).

The spelling of 240305317 in words is "two hundred forty million, three hundred five thousand, three hundred seventeen".