20012320023 has 8 divisors (see below), whose sum is σ = 26684035200. Its totient is φ = 13341075768.

The previous prime is 20012319989. The next prime is 20012320037. The reversal of 20012320023 is 32002321002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20012320023 - 2¹² = 20012315927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012319984 and 20012320011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012320063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2443 + ... + 200076.

It is an arithmetic number, because the mean of its divisors is an integer number (3335504400).

Almost surely, 2^20012320023 is an apocalyptic number.

20012320023 is a deficient number, since it is larger than the sum of its proper divisors (6671715177).

20012320023 is a wasteful number, since it uses less digits than its factorization.

20012320023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235461.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20012320023 its reverse (32002321002), we get a palindrome (52014641025).

The spelling of 20012320023 in words is "twenty billion, twelve million, three hundred twenty thousand, twenty-three".