11171291 has 4 divisors (see below), whose sum is σ = 11251800. Its totient is φ = 11090784.

The previous prime is 11171273. The next prime is 11171309. The reversal of 11171291 is 19217111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11171273) and next prime (11171309).

It is a cyclic number.

It is not a de Polignac number, because 11171291 - 2¹⁸ = 10909147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11171201) 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, 40046 + ... + 40323.

It is an arithmetic number, because the mean of its divisors is an integer number (2812950).

Almost surely, 2^11171291 is an apocalyptic number.

11171291 is a deficient number, since it is larger than the sum of its proper divisors (80509).

11171291 is an equidigital number, since it uses as much as digits as its factorization.

11171291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80508.

The product of its digits is 126, while the sum is 23.

The square root of 11171291 is about 3342.3481266918. The cubic root of 11171291 is about 223.5464555509.

The spelling of 11171291 in words is "eleven million, one hundred seventy-one thousand, two hundred ninety-one".