20422323231 has 16 divisors (see below), whose sum is σ = 28423954944. Its totient is φ = 13018215584.

The previous prime is 20422323199. The next prime is 20422323239. The reversal of 20422323231 is 13232322402.

It is a cyclic number.

It is not a de Polignac number, because 20422323231 - 2⁵ = 20422323199 is a prime.

It is a super-2 number, since 2×20422323231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422323239) 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 15 ways as a sum of consecutive naturals, for example, 143590 + ... + 247916.

It is an arithmetic number, because the mean of its divisors is an integer number (1776497184).

Almost surely, 2^20422323231 is an apocalyptic number.

20422323231 is a deficient number, since it is larger than the sum of its proper divisors (8001631713).

20422323231 is a wasteful number, since it uses less digits than its factorization.

20422323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107190.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20422323231 its reverse (13232322402), we get a palindrome (33654645633).

The spelling of 20422323231 in words is "twenty billion, four hundred twenty-two million, three hundred twenty-three thousand, two hundred thirty-one".