20340324243 has 12 divisors (see below), whose sum is σ = 29818983688. Its totient is φ = 13357824480.

The previous prime is 20340324209. The next prime is 20340324247. The reversal of 20340324243 is 34242304302.

20340324243 is a `hidden beast` number, since 203 + 4 + 0 + 32 + 424 + 3 = 666.

It is not a de Polignac number, because 20340324243 - 2¹⁴ = 20340307859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340324247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16865338 + ... + 16866543.

Almost surely, 2^20340324243 is an apocalyptic number.

20340324243 is a deficient number, since it is larger than the sum of its proper divisors (9478659445).

20340324243 is a wasteful number, since it uses less digits than its factorization.

20340324243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33731954 (or 33731951 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20340324243 its reverse (34242304302), we get a palindrome (54582628545).

The spelling of 20340324243 in words is "twenty billion, three hundred forty million, three hundred twenty-four thousand, two hundred forty-three".