2001131 has 8 divisors (see below), whose sum is σ = 2204400. Its totient is φ = 1801440.

The previous prime is 2001127. The next prime is 2001163. The reversal of 2001131 is 1311002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001131 - 2² = 2001127 is a prime.

It is a super-2 number, since 2×2001131² = 8009050558322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2001101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (275550).

2^2001131 is an apocalyptic number.

2001131 is a deficient number, since it is larger than the sum of its proper divisors (203269).

2001131 is a wasteful number, since it uses less digits than its factorization.

2001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 2001131 is about 1414.6133747424. The cubic root of 2001131 is about 126.0158500259.

Adding to 2001131 its reverse (1311002), we get a palindrome (3312133).

It can be divided in two parts, 200 and 1131, that added together give a palindrome (1331).

The spelling of 2001131 in words is "two million, one thousand, one hundred thirty-one".