20423113422 has 16 divisors (see below), whose sum is σ = 40850618112. Its totient is φ = 6806972600.

The previous prime is 20423113411. The next prime is 20423113427. The reversal of 20423113422 is 22431132402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20423113392 and 20423113401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423113427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120888 + ... + 235499.

It is an arithmetic number, because the mean of its divisors is an integer number (2553163632).

Almost surely, 2^20423113422 is an apocalyptic number.

20423113422 is an abundant number, since it is smaller than the sum of its proper divisors (20427504690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20423113422 is a wasteful number, since it uses less digits than its factorization.

20423113422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365943.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20423113422 its reverse (22431132402), we get a palindrome (42854245824).

The spelling of 20423113422 in words is "twenty billion, four hundred twenty-three million, one hundred thirteen thousand, four hundred twenty-two".