20221131023 has 4 divisors (see below), whose sum is σ = 20691389928. Its totient is φ = 19750872120.

The previous prime is 20221131017. The next prime is 20221131037. The reversal of 20221131023 is 32013112202.

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 20221131023 - 2⁶ = 20221130959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221130992 and 20221131010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221131043) by changing a digit.

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, 235129388 + ... + 235129473.

It is an arithmetic number, because the mean of its divisors is an integer number (5172847482).

Almost surely, 2^20221131023 is an apocalyptic number.

20221131023 is a deficient number, since it is larger than the sum of its proper divisors (470258905).

20221131023 is an equidigital number, since it uses as much as digits as its factorization.

20221131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470258904.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20221131023 its reverse (32013112202), we get a palindrome (52234243225).

The spelling of 20221131023 in words is "twenty billion, two hundred twenty-one million, one hundred thirty-one thousand, twenty-three".