11271279 has 4 divisors (see below), whose sum is σ = 15028376. Its totient is φ = 7514184.

The previous prime is 11271277. The next prime is 11271319. The reversal of 11271279 is 97217211.

It is a happy number.

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

It is not a de Polignac number, because 11271279 - 2¹ = 11271277 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 (11271277) 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 3 ways as a sum of consecutive naturals, for example, 1878544 + ... + 1878549.

It is an arithmetic number, because the mean of its divisors is an integer number (3757094).

Almost surely, 2^11271279 is an apocalyptic number.

11271279 is a deficient number, since it is larger than the sum of its proper divisors (3757097).

11271279 is an equidigital number, since it uses as much as digits as its factorization.

11271279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757096.

The product of its digits is 1764, while the sum is 30.

The square root of 11271279 is about 3357.2725537257. The cubic root of 11271279 is about 224.2114221447.

The spelling of 11271279 in words is "eleven million, two hundred seventy-one thousand, two hundred seventy-nine".