2001131133 has 4 divisors (see below), whose sum is σ = 2668174848. Its totient is φ = 1334087420.

The previous prime is 2001131131. The next prime is 2001131159. The reversal of 2001131133 is 3311311002.

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 2001131133 - 2¹ = 2001131131 is a prime.

It is a super-2 number, since 2×2001131133² = 8009051622923727378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001131131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333521853 + ... + 333521858.

It is an arithmetic number, because the mean of its divisors is an integer number (667043712).

Almost surely, 2^2001131133 is an apocalyptic number.

It is an amenable number.

2001131133 is a deficient number, since it is larger than the sum of its proper divisors (667043715).

2001131133 is an equidigital number, since it uses as much as digits as its factorization.

2001131133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667043714.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 2001131133 is about 44734.0042137969. The cubic root of 2001131133 is about 1260.1585281767.

Adding to 2001131133 its reverse (3311311002), we get a palindrome (5312442135).

The spelling of 2001131133 in words is "two billion, one million, one hundred thirty-one thousand, one hundred thirty-three".