20201231023 has 8 divisors (see below), whose sum is σ = 20244103200. Its totient is φ = 20158387200.

The previous prime is 20201231009. The next prime is 20201231093. The reversal of 20201231023 is 32013210202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201231023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201230988 and 20201231006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201231093) 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, 1984998 + ... + 1995148.

It is an arithmetic number, because the mean of its divisors is an integer number (2530512900).

Almost surely, 2^20201231023 is an apocalyptic number.

20201231023 is a deficient number, since it is larger than the sum of its proper divisors (42872177).

20201231023 is a wasteful number, since it uses less digits than its factorization.

20201231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14177.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20201231023 its reverse (32013210202), we get a palindrome (52214441225).

The spelling of 20201231023 in words is "twenty billion, two hundred one million, two hundred thirty-one thousand, twenty-three".