2011310291 has 2 divisors, whose sum is σ = 2011310292. Its totient is φ = 2011310290.

The previous prime is 2011310281. The next prime is 2011310297. The reversal of 2011310291 is 1920131102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011310291 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011310297) 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 as a sum of consecutive naturals, namely, 1005655145 + 1005655146.

It is an arithmetic number, because the mean of its divisors is an integer number (1005655146).

Almost surely, 2^2011310291 is an apocalyptic number.

2011310291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011310291 is an equidigital number, since it uses as much as digits as its factorization.

2011310291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 2011310291 is about 44847.6341739450. The cubic root of 2011310291 is about 1262.2915991796.

Adding to 2011310291 its reverse (1920131102), we get a palindrome (3931441393).

The spelling of 2011310291 in words is "two billion, eleven million, three hundred ten thousand, two hundred ninety-one".