2001311875 has 10 divisors (see below), whose sum is σ = 2500840100. Its totient is φ = 1601049000.

The previous prime is 2001311867. The next prime is 2001311899. The reversal of 2001311875 is 5781131002.

It is not a de Polignac number, because 2001311875 - 2³ = 2001311867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1600425 + ... + 1601674.

It is an arithmetic number, because the mean of its divisors is an integer number (250084010).

Almost surely, 2^2001311875 is an apocalyptic number.

2001311875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2001311875 is a deficient number, since it is larger than the sum of its proper divisors (499528225).

2001311875 is an frugal number, since it uses more digits than its factorization.

2001311875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202119 (or 3202104 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 2001311875 is about 44736.0243539812. The cubic root of 2001311875 is about 1260.1964661729.

Adding to 2001311875 its reverse (5781131002), we get a palindrome (7782442877).

The spelling of 2001311875 in words is "two billion, one million, three hundred eleven thousand, eight hundred seventy-five".