2001324331 has 4 divisors (see below), whose sum is σ = 2001646192. Its totient is φ = 2001002472.

The previous prime is 2001324329. The next prime is 2001324341. The reversal of 2001324331 is 1334231002.

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 2001324331 - 2¹ = 2001324329 is a prime.

It is a super-2 number, since 2×2001324331² = 8010598155705195122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001324299 and 2001324308.

It is not an unprimeable number, because it can be changed into a prime (2001324341) 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, 151416 + ... + 164101.

It is an arithmetic number, because the mean of its divisors is an integer number (500411548).

Almost surely, 2^2001324331 is an apocalyptic number.

2001324331 is a deficient number, since it is larger than the sum of its proper divisors (321861).

2001324331 is an equidigital number, since it uses as much as digits as its factorization.

2001324331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321860.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2001324331 is about 44736.1635704270. The cubic root of 2001324331 is about 1260.1990806204.

Adding to 2001324331 its reverse (1334231002), we get a palindrome (3335555333).

It can be divided in two parts, 20013 and 24331, that added together give a palindrome (44344).

The spelling of 2001324331 in words is "two billion, one million, three hundred twenty-four thousand, three hundred thirty-one".