2001311303 has 4 divisors (see below), whose sum is σ = 2001550320. Its totient is φ = 2001072288.

The previous prime is 2001311243. The next prime is 2001311353. The reversal of 2001311303 is 3031131002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3031131002 = 2 ⋅1515565501.

It is a cyclic number.

It is not a de Polignac number, because 2001311303 - 2²⁰ = 2000262727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001311353) 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, 106475 + ... + 123852.

It is an arithmetic number, because the mean of its divisors is an integer number (500387580).

Almost surely, 2^2001311303 is an apocalyptic number.

2001311303 is a deficient number, since it is larger than the sum of its proper divisors (239017).

2001311303 is an equidigital number, since it uses as much as digits as its factorization.

2001311303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239016.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 2001311303 is about 44736.0179609227. The cubic root of 2001311303 is about 1260.1963461129.

Adding to 2001311303 its reverse (3031131002), we get a palindrome (5032442305).

The spelling of 2001311303 in words is "two billion, one million, three hundred eleven thousand, three hundred three".