2011730287 has 4 divisors (see below), whose sum is σ = 2299120336. Its totient is φ = 1724340240.

The previous prime is 2011730209. The next prime is 2011730297. The reversal of 2011730287 is 7820371102.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2011730287 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 (2011730297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143695014 + ... + 143695027.

It is an arithmetic number, because the mean of its divisors is an integer number (574780084).

Almost surely, 2^2011730287 is an apocalyptic number.

2011730287 is a deficient number, since it is larger than the sum of its proper divisors (287390049).

2011730287 is an equidigital number, since it uses as much as digits as its factorization.

2011730287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287390048.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 2011730287 is about 44852.3164061791. The cubic root of 2011730287 is about 1262.3794557586.

The spelling of 2011730287 in words is "two billion, eleven million, seven hundred thirty thousand, two hundred eighty-seven".