2001322331 has 4 divisors (see below), whose sum is σ = 2119047192. Its totient is φ = 1883597472.

The previous prime is 2001322291. The next prime is 2001322363. The reversal of 2001322331 is 1332231002.

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 2001322331 - 2¹⁰ = 2001321307 is a prime.

It is a super-2 number, since 2×2001322331² = 8010582145118547122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 117724843 = 2001322331 / (2 + 0 + 0 + 1 + 3 + 2 + 2 + 3 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001322031) 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, 58862405 + ... + 58862438.

It is an arithmetic number, because the mean of its divisors is an integer number (529761798).

Almost surely, 2^2001322331 is an apocalyptic number.

2001322331 is a deficient number, since it is larger than the sum of its proper divisors (117724861).

2001322331 is a wasteful number, since it uses less digits than its factorization.

2001322331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117724860.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2001322331 is about 44736.1412171412. The cubic root of 2001322331 is about 1260.1986608319.

Adding to 2001322331 its reverse (1332231002), we get a palindrome (3333553333).

The spelling of 2001322331 in words is "two billion, one million, three hundred twenty-two thousand, three hundred thirty-one".