2291011 has 4 divisors (see below), whose sum is σ = 2294152. Its totient is φ = 2287872.

The previous prime is 2290999. The next prime is 2291017. The reversal of 2291011 is 1101922.

2291011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1101922 = 2 ⋅550961.

It is a cyclic number.

It is not a de Polignac number, because 2291011 - 2⁵ = 2290979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291017) 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 3 ways as a sum of consecutive naturals, for example, 160 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (573538).

2^2291011 is an apocalyptic number.

2291011 is a deficient number, since it is larger than the sum of its proper divisors (3141).

2291011 is a wasteful number, since it uses less digits than its factorization.

2291011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 2291011 is about 1513.6086019840. The cubic root of 2291011 is about 131.8284233890.

Adding to 2291011 its reverse (1101922), we get a palindrome (3392933).

The spelling of 2291011 in words is "two million, two hundred ninety-one thousand, eleven".