2011440231 has 6 divisors (see below), whose sum is σ = 2905413680. Its totient is φ = 1340960148.

The previous prime is 2011440217. The next prime is 2011440253. The reversal of 2011440231 is 1320441102.

2011440231 is a `hidden beast` number, since 201 + 1 + 440 + 23 + 1 = 666.

It is not a de Polignac number, because 2011440231 - 2⁷ = 2011440103 is a prime.

It is a super-2 number, since 2×2011440231² = 8091783605770666722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011440281) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 111746671 + ... + 111746688.

Almost surely, 2^2011440231 is an apocalyptic number.

2011440231 is a deficient number, since it is larger than the sum of its proper divisors (893973449).

2011440231 is a wasteful number, since it uses less digits than its factorization.

2011440231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223493365 (or 223493362 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2011440231 is about 44849.0828334315. The cubic root of 2011440231 is about 1262.3187818971.

Adding to 2011440231 its reverse (1320441102), we get a palindrome (3331881333).

The spelling of 2011440231 in words is "two billion, eleven million, four hundred forty thousand, two hundred thirty-one".