2001534111 has 16 divisors (see below), whose sum is σ = 2974782720. Its totient is φ = 1330059960.

The previous prime is 2001534077. The next prime is 2001534131. The reversal of 2001534111 is 1114351002.

2001534111 is a `hidden beast` number, since 20 + 0 + 1 + 534 + 111 = 666.

It is not a de Polignac number, because 2001534111 - 2⁷ = 2001533983 is a prime.

It is a super-2 number, since 2×2001534111² = 8012277594993120642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001534131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110785 + ... + 127578.

It is an arithmetic number, because the mean of its divisors is an integer number (185923920).

Almost surely, 2^2001534111 is an apocalyptic number.

2001534111 is a deficient number, since it is larger than the sum of its proper divisors (973248609).

2001534111 is a wasteful number, since it uses less digits than its factorization.

2001534111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238683 (or 238677 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2001534111 is about 44738.5081445504. The cubic root of 2001534111 is about 1260.2431106864.

Adding to 2001534111 its reverse (1114351002), we get a palindrome (3115885113).

The spelling of 2001534111 in words is "two billion, one million, five hundred thirty-four thousand, one hundred eleven".