20331323023 has 12 divisors (see below), whose sum is σ = 22412101320. Its totient is φ = 18429717680.

The previous prime is 20331323011. The next prime is 20331323039. The reversal of 20331323023 is 32032313302.

It is not a de Polignac number, because 20331323023 - 2¹³ = 20331314831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331322985 and 20331323003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331323063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200128 + ... + 284101.

It is an arithmetic number, because the mean of its divisors is an integer number (1867675110).

Almost surely, 2^20331323023 is an apocalyptic number.

20331323023 is a deficient number, since it is larger than the sum of its proper divisors (2080778297).

20331323023 is a wasteful number, since it uses less digits than its factorization.

20331323023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484598 (or 484587 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 20331323023 its reverse (32032313302), we get a palindrome (52363636325).

The spelling of 20331323023 in words is "twenty billion, three hundred thirty-one million, three hundred twenty-three thousand, twenty-three".