11331091 has 2 divisors, whose sum is σ = 11331092. Its totient is φ = 11331090.

The previous prime is 11331071. The next prime is 11331121. The reversal of 11331091 is 19013311.

It is a happy number.

11331091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (19013311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11331091 - 2¹⁷ = 11200019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11331031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665545 + 5665546.

It is an arithmetic number, because the mean of its divisors is an integer number (5665546).

Almost surely, 2^11331091 is an apocalyptic number.

11331091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331091 is an equidigital number, since it uses as much as digits as its factorization.

11331091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 11331091 is about 3366.1685935199. The cubic root of 11331091 is about 224.6073216663.

The spelling of 11331091 in words is "eleven million, three hundred thirty-one thousand, ninety-one".