20023023001 has 4 divisors (see below), whose sum is σ = 20713472100. Its totient is φ = 19332573904.

The previous prime is 20023022983. The next prime is 20023023017. The reversal of 20023023001 is 10032032002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10598496601 + 9424526400 = 102949^2 + 97080^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023023001 - 2²¹ = 20020925849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023023701) 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, 345224506 + ... + 345224563.

It is an arithmetic number, because the mean of its divisors is an integer number (5178368025).

Almost surely, 2^20023023001 is an apocalyptic number.

It is an amenable number.

20023023001 is a deficient number, since it is larger than the sum of its proper divisors (690449099).

20023023001 is an equidigital number, since it uses as much as digits as its factorization.

20023023001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690449098.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20023023001 its reverse (10032032002), we get a palindrome (30055055003).

Subtracting from 20023023001 its reverse (10032032002), we obtain a palindrome (9990990999).

The spelling of 20023023001 in words is "twenty billion, twenty-three million, twenty-three thousand, one".