20424200340531 has 32 divisors (see below), whose sum is σ = 31102834593600. Its totient is φ = 11810103312384.

The previous prime is 20424200340529. The next prime is 20424200340589. The reversal of 20424200340531 is 13504300242402.

It is not a de Polignac number, because 20424200340531 - 2¹ = 20424200340529 is a prime.

It is a super-2 number, since 2×20424200340531² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20424200340931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24720606 + ... + 25533443.

It is an arithmetic number, because the mean of its divisors is an integer number (971963581050).

Almost surely, 2^{20424200340531} is an apocalyptic number.

20424200340531 is a deficient number, since it is larger than the sum of its proper divisors (10678634253069).

20424200340531 is a wasteful number, since it uses less digits than its factorization.

20424200340531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50254695.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20424200340531 its reverse (13504300242402), we get a palindrome (33928500582933).

The spelling of 20424200340531 in words is "twenty trillion, four hundred twenty-four billion, two hundred million, three hundred forty thousand, five hundred thirty-one".