2011321140 has 24 divisors (see below), whose sum is σ = 5631699360. Its totient is φ = 536352288.

The previous prime is 2011321139. The next prime is 2011321159. The reversal of 2011321140 is 411231102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16760950 + ... + 16761069.

It is an arithmetic number, because the mean of its divisors is an integer number (234654140).

Almost surely, 2^2011321140 is an apocalyptic number.

2011321140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011321140 is an abundant number, since it is smaller than the sum of its proper divisors (3620378220).

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

2011321140 is a wasteful number, since it uses less digits than its factorization.

2011321140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33522031 (or 33522029 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2011321140 is about 44847.7551277653. The cubic root of 2011321140 is about 1262.2938687742.

Adding to 2011321140 its reverse (411231102), we get a palindrome (2422552242).

The spelling of 2011321140 in words is "two billion, eleven million, three hundred twenty-one thousand, one hundred forty".