20312323311023 has 4 divisors (see below), whose sum is σ = 20521728706080. Its totient is φ = 20102917915968.

The previous prime is 20312323311017. The next prime is 20312323311043. The reversal of 20312323311023 is 32011332321302.

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 20312323311023 - 2⁸ = 20312323310767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312323310983 and 20312323311001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312323311043) 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 3 ways as a sum of consecutive naturals, for example, 104702697383 + ... + 104702697576.

It is an arithmetic number, because the mean of its divisors is an integer number (5130432176520).

Almost surely, 2^{20312323311023} is an apocalyptic number.

20312323311023 is a deficient number, since it is larger than the sum of its proper divisors (209405395057).

20312323311023 is an equidigital number, since it uses as much as digits as its factorization.

20312323311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209405395056.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20312323311023 its reverse (32011332321302), we get a palindrome (52323655632325).

The spelling of 20312323311023 in words is "twenty trillion, three hundred twelve billion, three hundred twenty-three million, three hundred eleven thousand, twenty-three".