2001332323 has 4 divisors (see below), whose sum is σ = 2019693280. Its totient is φ = 1982971368.

The previous prime is 2001332287. The next prime is 2001332351. The reversal of 2001332323 is 3232331002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001332323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001332323.

It is not an unprimeable number, because it can be changed into a prime (2001332353) 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, 9180315 + ... + 9180532.

It is an arithmetic number, because the mean of its divisors is an integer number (504923320).

Almost surely, 2^2001332323 is an apocalyptic number.

2001332323 is a deficient number, since it is larger than the sum of its proper divisors (18360957).

2001332323 is a wasteful number, since it uses less digits than its factorization.

2001332323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18360956.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 2001332323 is about 44736.2528940456. The cubic root of 2001332323 is about 1260.2007580926.

Adding to 2001332323 its reverse (3232331002), we get a palindrome (5233663325).

The spelling of 2001332323 in words is "two billion, one million, three hundred thirty-two thousand, three hundred twenty-three".