11270991 has 8 divisors (see below), whose sum is σ = 15062704. Its totient is φ = 7496640.

The previous prime is 11270953. The next prime is 11270993. The reversal of 11270991 is 19907211.

11270991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11270991 - 2²² = 7076687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11270993) 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 in 7 ways as a sum of consecutive naturals, for example, 2740 + ... + 5481.

It is an arithmetic number, because the mean of its divisors is an integer number (1882838).

Almost surely, 2^11270991 is an apocalyptic number.

11270991 is a deficient number, since it is larger than the sum of its proper divisors (3791713).

11270991 is an equidigital number, since it uses as much as digits as its factorization.

11270991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8681.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 11270991 is about 3357.2296614917. The cubic root of 11270991 is about 224.2095124697.

The spelling of 11270991 in words is "eleven million, two hundred seventy thousand, nine hundred ninety-one".