240243404311 has 4 divisors (see below), whose sum is σ = 240860997000. Its totient is φ = 239625811624.

The previous prime is 240243404293. The next prime is 240243404321. The reversal of 240243404311 is 113404342042.

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 240243404311 - 2⁷ = 240243404183 is a prime.

It is a super-2 number, since 2×240243404311² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240243404311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240243404321) 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, 308795761 + ... + 308796538.

It is an arithmetic number, because the mean of its divisors is an integer number (60215249250).

Almost surely, 2^240243404311 is an apocalyptic number.

240243404311 is a deficient number, since it is larger than the sum of its proper divisors (617592689).

240243404311 is an equidigital number, since it uses as much as digits as its factorization.

240243404311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617592688.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 240243404311 its reverse (113404342042), we get a palindrome (353647746353).

The spelling of 240243404311 in words is "two hundred forty billion, two hundred forty-three million, four hundred four thousand, three hundred eleven".