2001311033 has 4 divisors (see below), whose sum is σ = 2004816528. Its totient is φ = 1997805540.

The previous prime is 2001311017. The next prime is 2001311041. The reversal of 2001311033 is 3301131002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001311033 - 2⁴ = 2001311017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001310999 and 2001311017.

It is not an unprimeable number, because it can be changed into a prime (2001314033) 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, 1751891 + ... + 1753032.

It is an arithmetic number, because the mean of its divisors is an integer number (501204132).

Almost surely, 2^2001311033 is an apocalyptic number.

It is an amenable number.

2001311033 is a deficient number, since it is larger than the sum of its proper divisors (3505495).

2001311033 is an equidigital number, since it uses as much as digits as its factorization.

2001311033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505494.

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

The square root of 2001311033 is about 44736.0149432200. The cubic root of 2001311033 is about 1260.1962894412.

Adding to 2001311033 its reverse (3301131002), we get a palindrome (5302442035).

The spelling of 2001311033 in words is "two billion, one million, three hundred eleven thousand, thirty-three".