11291081 has 4 divisors (see below), whose sum is σ = 11303952. Its totient is φ = 11278212.

The previous prime is 11291053. The next prime is 11291101. The reversal of 11291081 is 18019211.

11291081 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11291081 - 2⁶ = 11291017 is a prime.

It is a super-2 number, since 2×11291081² = 254977020297122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11291011) 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, 5015 + ... + 6908.

It is an arithmetic number, because the mean of its divisors is an integer number (2825988).

Almost surely, 2^11291081 is an apocalyptic number.

It is an amenable number.

11291081 is a deficient number, since it is larger than the sum of its proper divisors (12871).

11291081 is an equidigital number, since it uses as much as digits as its factorization.

11291081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12870.

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

The square root of 11291081 is about 3360.2203796775. The cubic root of 11291081 is about 224.3426476270.

The spelling of 11291081 in words is "eleven million, two hundred ninety-one thousand, eighty-one".