11071091 has 4 divisors (see below), whose sum is σ = 11653800. Its totient is φ = 10488384.

The previous prime is 11071057. The next prime is 11071133. The reversal of 11071091 is 19017011.

11071091 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 11071091 - 2¹⁸ = 10808947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11071391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291326 + ... + 291363.

It is an arithmetic number, because the mean of its divisors is an integer number (2913450).

Almost surely, 2^11071091 is an apocalyptic number.

11071091 is a deficient number, since it is larger than the sum of its proper divisors (582709).

11071091 is an equidigital number, since it uses as much as digits as its factorization.

11071091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582708.

The product of its (nonzero) digits is 63, while the sum is 20.

The square root of 11071091 is about 3327.3249014787. The cubic root of 11071091 is about 222.8760865874.

The spelling of 11071091 in words is "eleven million, seventy-one thousand, ninety-one".