11081291 has 12 divisors (see below), whose sum is σ = 12344976. Its totient is φ = 9887760.

The previous prime is 11081281. The next prime is 11081299. The reversal of 11081291 is 19218011.

It is not a de Polignac number, because 11081291 - 2⁶ = 11081227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11081299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12050 + ... + 12936.

It is an arithmetic number, because the mean of its divisors is an integer number (1028748).

Almost surely, 2^11081291 is an apocalyptic number.

11081291 is a deficient number, since it is larger than the sum of its proper divisors (1263685).

11081291 is an equidigital number, since it uses as much as digits as its factorization.

11081291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 11081291 is about 3328.8573114509. The cubic root of 11081291 is about 222.9445121920.

The spelling of 11081291 in words is "eleven million, eighty-one thousand, two hundred ninety-one".