20023201013 has 4 divisors (see below), whose sum is σ = 20087584608. Its totient is φ = 19958817420.

The previous prime is 20023200943. The next prime is 20023201027. The reversal of 20023201013 is 31010232002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20023201013 - 2¹⁸ = 20022938869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023201063) 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, 32191331 + ... + 32191952.

It is an arithmetic number, because the mean of its divisors is an integer number (5021896152).

Almost surely, 2^20023201013 is an apocalyptic number.

It is an amenable number.

20023201013 is a deficient number, since it is larger than the sum of its proper divisors (64383595).

20023201013 is an equidigital number, since it uses as much as digits as its factorization.

20023201013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64383594.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20023201013 its reverse (31010232002), we get a palindrome (51033433015).

The spelling of 20023201013 in words is "twenty billion, twenty-three million, two hundred one thousand, thirteen".