243035040511 has 4 divisors (see below), whose sum is σ = 243394029432. Its totient is φ = 242676051592.

The previous prime is 243035040491. The next prime is 243035040517. The reversal of 243035040511 is 115040530342.

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 243035040511 - 2³¹ = 240887556863 is a prime.

It is a super-2 number, since 2×243035040511² (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 243035040511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243035040517) 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, 179493445 + ... + 179494798.

It is an arithmetic number, because the mean of its divisors is an integer number (60848507358).

Almost surely, 2^243035040511 is an apocalyptic number.

243035040511 is a deficient number, since it is larger than the sum of its proper divisors (358988921).

243035040511 is an equidigital number, since it uses as much as digits as its factorization.

243035040511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358988920.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 243035040511 its reverse (115040530342), we get a palindrome (358075570853).

The spelling of 243035040511 in words is "two hundred forty-three billion, thirty-five million, forty thousand, five hundred eleven".