2001003231001 has 4 divisors (see below), whose sum is σ = 2001294801792. Its totient is φ = 2000711660212.

The previous prime is 2001003230969. The next prime is 2001003231047. The reversal of 2001003231001 is 1001323001002.

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 2001003231001 - 2⁵ = 2001003230969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001003231061) 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, 145775101 + ... + 145788826.

It is an arithmetic number, because the mean of its divisors is an integer number (500323700448).

Almost surely, 2^{2001003231001} is an apocalyptic number.

It is an amenable number.

2001003231001 is a deficient number, since it is larger than the sum of its proper divisors (291570791).

2001003231001 is an equidigital number, since it uses as much as digits as its factorization.

2001003231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291570790.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 2001003231001 its reverse (1001323001002), we get a palindrome (3002326232003).

The spelling of 2001003231001 in words is "two trillion, one billion, three million, two hundred thirty-one thousand, one".