243404032311 has 12 divisors (see below), whose sum is σ = 383545748040. Its totient is φ = 147517595280.

The previous prime is 243404032273. The next prime is 243404032321. The reversal of 243404032311 is 113230404342.

243404032311 is a `hidden beast` number, since 2 + 4 + 340 + 4 + 0 + 3 + 2 + 311 = 666.

It is not a de Polignac number, because 243404032311 - 2¹⁴ = 243404015927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243404032321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1229313196 + ... + 1229313393.

It is an arithmetic number, because the mean of its divisors is an integer number (31962145670).

Almost surely, 2^243404032311 is an apocalyptic number.

243404032311 is a deficient number, since it is larger than the sum of its proper divisors (140141715729).

243404032311 is a wasteful number, since it uses less digits than its factorization.

243404032311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458626606 (or 2458626603 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 243404032311 its reverse (113230404342), we get a palindrome (356634436653).

The spelling of 243404032311 in words is "two hundred forty-three billion, four hundred four million, thirty-two thousand, three hundred eleven".