2011660311 has 8 divisors (see below), whose sum is σ = 2699298544. Its totient is φ = 1332564480.

The previous prime is 2011660309. The next prime is 2011660319. The reversal of 2011660311 is 1130661102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2011660311 - 2¹ = 2011660309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011660319) 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 7 ways as a sum of consecutive naturals, for example, 2135050 + ... + 2135991.

It is an arithmetic number, because the mean of its divisors is an integer number (337412318).

Almost surely, 2^2011660311 is an apocalyptic number.

2011660311 is a deficient number, since it is larger than the sum of its proper divisors (687638233).

2011660311 is a wasteful number, since it uses less digits than its factorization.

2011660311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271201.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 2011660311 is about 44851.5363282017. The cubic root of 2011660311 is about 1262.3648187254.

The spelling of 2011660311 in words is "two billion, eleven million, six hundred sixty thousand, three hundred eleven".