2002003231 has 4 divisors (see below), whose sum is σ = 2002126672. Its totient is φ = 2001879792.

The previous prime is 2002003217. The next prime is 2002003247. The reversal of 2002003231 is 1323002002.

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 2002003231 - 2⁹ = 2002002719 is a prime.

It is a super-2 number, since 2×2002003231² = 8016033873868878722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002004231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32910 + ... + 71323.

It is an arithmetic number, because the mean of its divisors is an integer number (500531668).

Almost surely, 2^2002003231 is an apocalyptic number.

2002003231 is a deficient number, since it is larger than the sum of its proper divisors (123441).

2002003231 is a wasteful number, since it uses less digits than its factorization.

2002003231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123440.

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

The square root of 2002003231 is about 44743.7507480095. The cubic root of 2002003231 is about 1260.3415616799.

Adding to 2002003231 its reverse (1323002002), we get a palindrome (3325005233).

The spelling of 2002003231 in words is "two billion, two million, three thousand, two hundred thirty-one".