20322031123 has 4 divisors (see below), whose sum is σ = 20341149808. Its totient is φ = 20302912440.

The previous prime is 20322031109. The next prime is 20322031189. The reversal of 20322031123 is 32113022302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20322031123 - 2⁵ = 20322031091 is a prime.

It is a super-2 number, since 2×20322031123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20322031123.

It is not an unprimeable number, because it can be changed into a prime (20322031193) 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 3 ways as a sum of consecutive naturals, for example, 9557748 + ... + 9559873.

It is an arithmetic number, because the mean of its divisors is an integer number (5085287452).

Almost surely, 2^20322031123 is an apocalyptic number.

20322031123 is a deficient number, since it is larger than the sum of its proper divisors (19118685).

20322031123 is a wasteful number, since it uses less digits than its factorization.

20322031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19118684.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20322031123 its reverse (32113022302), we get a palindrome (52435053425).

The spelling of 20322031123 in words is "twenty billion, three hundred twenty-two million, thirty-one thousand, one hundred twenty-three".