240305305243 has 4 divisors (see below), whose sum is σ = 240374982600. Its totient is φ = 240235627888.

The previous prime is 240305305199. The next prime is 240305305277. The reversal of 240305305243 is 342503503042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240305305243 - 2⁹ = 240305304731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240305305283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34833505 + ... + 34840402.

It is an arithmetic number, because the mean of its divisors is an integer number (60093745650).

Almost surely, 2^240305305243 is an apocalyptic number.

240305305243 is a deficient number, since it is larger than the sum of its proper divisors (69677357).

240305305243 is an equidigital number, since it uses as much as digits as its factorization.

240305305243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69677356.

The product of its (nonzero) digits is 43200, while the sum is 31.

Adding to 240305305243 its reverse (342503503042), we get a palindrome (582808808285).

The spelling of 240305305243 in words is "two hundred forty billion, three hundred five million, three hundred five thousand, two hundred forty-three".