11320291 has 4 divisors (see below), whose sum is σ = 11327800. Its totient is φ = 11312784.

The previous prime is 11320277. The next prime is 11320303. The reversal of 11320291 is 19202311.

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: 19202311 = 1303 ⋅14737.

It is a cyclic number.

It is not a de Polignac number, because 11320291 - 2⁵ = 11320259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11320591) 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, 621 + ... + 4798.

It is an arithmetic number, because the mean of its divisors is an integer number (2831950).

Almost surely, 2^11320291 is an apocalyptic number.

11320291 is a deficient number, since it is larger than the sum of its proper divisors (7509).

11320291 is an equidigital number, since it uses as much as digits as its factorization.

11320291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11320291 is about 3364.5640133604. The cubic root of 11320291 is about 224.5359390086.

It can be divided in two parts, 11320 and 291, that added together give a palindrome (11611).

The spelling of 11320291 in words is "eleven million, three hundred twenty thousand, two hundred ninety-one".