11279281 has 8 divisors (see below), whose sum is σ = 12196800. Its totient is φ = 10368912.

The previous prime is 11279263. The next prime is 11279299. The reversal of 11279281 is 18297211.

11279281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11279263) and next prime (11279299).

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

It is a cyclic number.

It is not a de Polignac number, because 11279281 - 2⁷ = 11279153 is a prime.

It is a super-2 number, since 2×11279281² = 254444359753922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11279981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770 + ... + 5068.

It is an arithmetic number, because the mean of its divisors is an integer number (1524600).

Almost surely, 2^11279281 is an apocalyptic number.

It is an amenable number.

11279281 is a deficient number, since it is larger than the sum of its proper divisors (917519).

11279281 is a wasteful number, since it uses less digits than its factorization.

11279281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575.

The product of its digits is 2016, while the sum is 31.

The square root of 11279281 is about 3358.4640834763. The cubic root of 11279281 is about 224.2644689311.

The spelling of 11279281 in words is "eleven million, two hundred seventy-nine thousand, two hundred eighty-one".