2011130172 has 36 divisors (see below), whose sum is σ = 5144947080. Its totient is φ = 662298912.

The previous prime is 2011130159. The next prime is 2011130203. The reversal of 2011130172 is 2710311102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333547 + ... + 339522.

Almost surely, 2^2011130172 is an apocalyptic number.

It is an amenable number.

2011130172 is an abundant number, since it is smaller than the sum of its proper divisors (3133816908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011130172 is a wasteful number, since it uses less digits than its factorization.

2011130172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673162 (or 673157 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 2011130172 is about 44845.6260074492. The cubic root of 2011130172 is about 1262.2539173611.

Adding to 2011130172 its reverse (2710311102), we get a palindrome (4721441274).

The spelling of 2011130172 in words is "two billion, eleven million, one hundred thirty thousand, one hundred seventy-two".