2001112311 has 16 divisors (see below), whose sum is σ = 2918833920. Its totient is φ = 1209409920.

The previous prime is 2001112307. The next prime is 2001112339. The reversal of 2001112311 is 1132111002.

It is not a de Polignac number, because 2001112311 - 2² = 2001112307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001112111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72610 + ... + 96303.

It is an arithmetic number, because the mean of its divisors is an integer number (182427120).

Almost surely, 2^2001112311 is an apocalyptic number.

2001112311 is a deficient number, since it is larger than the sum of its proper divisors (917721609).

2001112311 is a wasteful number, since it uses less digits than its factorization.

2001112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169286.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2001112311 is about 44733.7938364275. The cubic root of 2001112311 is about 1260.1545772815.

Adding to 2001112311 its reverse (1132111002), we get a palindrome (3133223313).

The spelling of 2001112311 in words is "two billion, one million, one hundred twelve thousand, three hundred eleven".