20003231001 has 16 divisors (see below), whose sum is σ = 28756151424. Its totient is φ = 12295296384.

The previous prime is 20003230991. The next prime is 20003231011. The reversal of 20003231001 is 10013230002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20003230991) and next prime (20003231011).

It is not a de Polignac number, because 20003231001 - 2⁷ = 20003230873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20003231011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265821 + ... + 332666.

It is an arithmetic number, because the mean of its divisors is an integer number (1797259464).

Almost surely, 2^20003231001 is an apocalyptic number.

It is an amenable number.

20003231001 is a deficient number, since it is larger than the sum of its proper divisors (8752920423).

20003231001 is a wasteful number, since it uses less digits than its factorization.

20003231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599360.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20003231001 its reverse (10013230002), we get a palindrome (30016461003).

Subtracting from 20003231001 its reverse (10013230002), we obtain a palindrome (9990000999).

The spelling of 20003231001 in words is "twenty billion, three million, two hundred thirty-one thousand, one".