2001332313 has 8 divisors (see below), whose sum is σ = 2964936800. Its totient is φ = 1334221524.

The previous prime is 2001332287. The next prime is 2001332351. The reversal of 2001332313 is 3132331002.

2001332313 is a `hidden beast` number, since 20 + 0 + 1 + 332 + 313 = 666.

It is not a de Polignac number, because 2001332313 - 2²⁰ = 2000283737 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

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 7 ways as a sum of consecutive naturals, for example, 37061683 + ... + 37061736.

It is an arithmetic number, because the mean of its divisors is an integer number (370617100).

Almost surely, 2^2001332313 is an apocalyptic number.

It is an amenable number.

2001332313 is a deficient number, since it is larger than the sum of its proper divisors (963604487).

2001332313 is an equidigital number, since it uses as much as digits as its factorization.

2001332313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74123428 (or 74123422 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 2001332313 is about 44736.2527822794. The cubic root of 2001332313 is about 1260.2007559937.

Adding to 2001332313 its reverse (3132331002), we get a palindrome (5133663315).

It can be divided in two parts, 20013 and 32313, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 2001332313 in words is "two billion, one million, three hundred thirty-two thousand, three hundred thirteen".