20442304423331 has 4 divisors (see below), whose sum is σ = 23362633626672. Its totient is φ = 17521975219992.

The previous prime is 20442304423301. The next prime is 20442304423403. The reversal of 20442304423331 is 13332440324402.

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 20442304423331 - 2⁴² = 16044257912227 is a prime.

It is a super-2 number, since 2×20442304423331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20442304423291 and 20442304423300.

It is not an unprimeable number, because it can be changed into a prime (20442304423301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460164601660 + ... + 1460164601673.

It is an arithmetic number, because the mean of its divisors is an integer number (5840658406668).

Almost surely, 2^{20442304423331} is an apocalyptic number.

20442304423331 is a deficient number, since it is larger than the sum of its proper divisors (2920329203341).

20442304423331 is an equidigital number, since it uses as much as digits as its factorization.

20442304423331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920329203340.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 20442304423331 its reverse (13332440324402), we get a palindrome (33774744747733).

The spelling of 20442304423331 in words is "twenty trillion, four hundred forty-two billion, three hundred four million, four hundred twenty-three thousand, three hundred thirty-one".