2001232003 has 4 divisors (see below), whose sum is σ = 2001381480. Its totient is φ = 2001082528.

The previous prime is 2001231989. The next prime is 2001232069. The reversal of 2001232003 is 3002321002.

It is a happy number.

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 2001232003 - 2¹⁷ = 2001100931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001232403) 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 3 ways as a sum of consecutive naturals, for example, 52438 + ... + 82171.

It is an arithmetic number, because the mean of its divisors is an integer number (500345370).

Almost surely, 2^2001232003 is an apocalyptic number.

2001232003 is a deficient number, since it is larger than the sum of its proper divisors (149477).

2001232003 is a wasteful number, since it uses less digits than its factorization.

2001232003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149476.

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

The square root of 2001232003 is about 44735.1316416974. The cubic root of 2001232003 is about 1260.1797012111.

Adding to 2001232003 its reverse (3002321002), we get a palindrome (5003553005).

The spelling of 2001232003 in words is "two billion, one million, two hundred thirty-two thousand, three".