20344503420231 has 16 divisors (see below), whose sum is σ = 27759805518720. Its totient is φ = 13246169156640.

The previous prime is 20344503420229. The next prime is 20344503420289. The reversal of 20344503420231 is 13202430544302.

It is not a de Polignac number, because 20344503420231 - 2¹ = 20344503420229 is a prime.

It is a super-2 number, since 2×20344503420231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20344503420192 and 20344503420201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344503422231) 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 15 ways as a sum of consecutive naturals, for example, 7205896 + ... + 9623613.

It is an arithmetic number, because the mean of its divisors is an integer number (1734987844920).

Almost surely, 2^{20344503420231} is an apocalyptic number.

20344503420231 is a deficient number, since it is larger than the sum of its proper divisors (7415302098489).

20344503420231 is a wasteful number, since it uses less digits than its factorization.

20344503420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16838926.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 20344503420231 its reverse (13202430544302), we get a palindrome (33546933964533).

The spelling of 20344503420231 in words is "twenty trillion, three hundred forty-four billion, five hundred three million, four hundred twenty thousand, two hundred thirty-one".