20322311230505 has 4 divisors (see below), whose sum is σ = 24386773476612. Its totient is φ = 16257848984400.

The previous prime is 20322311230451. The next prime is 20322311230541. The reversal of 20322311230505 is 50503211322302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14941966554256 + 5380344676249 = 3865484^2 + 2319557^2 .

It is not a de Polignac number, because 20322311230505 - 2³⁴ = 20305131361321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2032231123046 + ... + 2032231123055.

It is an arithmetic number, because the mean of its divisors is an integer number (6096693369153).

Almost surely, 2^{20322311230505} is an apocalyptic number.

It is an amenable number.

20322311230505 is a deficient number, since it is larger than the sum of its proper divisors (4064462246107).

20322311230505 is an equidigital number, since it uses as much as digits as its factorization.

20322311230505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064462246106.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 20322311230505 its reverse (50503211322302), we get a palindrome (70825522552807).

The spelling of 20322311230505 in words is "twenty trillion, three hundred twenty-two billion, three hundred eleven million, two hundred thirty thousand, five hundred five".