2011731187 has 2 divisors, whose sum is σ = 2011731188. Its totient is φ = 2011731186.

The previous prime is 2011731157. The next prime is 2011731217. The reversal of 2011731187 is 7811371102.

It is a balanced prime because it is at equal distance from previous prime (2011731157) and next prime (2011731217).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011731187 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011731157) 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 as a sum of consecutive naturals, namely, 1005865593 + 1005865594.

It is an arithmetic number, because the mean of its divisors is an integer number (1005865594).

Almost surely, 2^2011731187 is an apocalyptic number.

2011731187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011731187 is an equidigital number, since it uses as much as digits as its factorization.

2011731187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 2011731187 is about 44852.3264391046. The cubic root of 2011731187 is about 1262.3796440114.

The spelling of 2011731187 in words is "two billion, eleven million, seven hundred thirty-one thousand, one hundred eighty-seven".