201023130023 has 4 divisors (see below), whose sum is σ = 201553534440. Its totient is φ = 200492725608.

The previous prime is 201023129999. The next prime is 201023130071. The reversal of 201023130023 is 320031320102.

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 201023130023 - 2⁶ = 201023129959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201023129983 and 201023130010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201023130223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265201640 + ... + 265202397.

It is an arithmetic number, because the mean of its divisors is an integer number (50388383610).

Almost surely, 2^201023130023 is an apocalyptic number.

201023130023 is a deficient number, since it is larger than the sum of its proper divisors (530404417).

201023130023 is an equidigital number, since it uses as much as digits as its factorization.

201023130023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530404416.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 201023130023 its reverse (320031320102), we get a palindrome (521054450125).

The spelling of 201023130023 in words is "two hundred one billion, twenty-three million, one hundred thirty thousand, twenty-three".