11193281 has 8 divisors (see below), whose sum is σ = 12243744. Its totient is φ = 10148320.

The previous prime is 11193271. The next prime is 11193283. The reversal of 11193281 is 18239111.

11193281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11193281 - 2¹⁴ = 11176897 is a prime.

It is a super-2 number, since 2×11193281² = 250579079089922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11193281.

It is not an unprimeable number, because it can be changed into a prime (11193283) 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, 3725 + ... + 6021.

It is an arithmetic number, because the mean of its divisors is an integer number (1530468).

Almost surely, 2^11193281 is an apocalyptic number.

11193281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11193281 is a deficient number, since it is larger than the sum of its proper divisors (1050463).

11193281 is a wasteful number, since it uses less digits than its factorization.

11193281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751.

The product of its digits is 432, while the sum is 26.

The square root of 11193281 is about 3345.6361129089. The cubic root of 11193281 is about 223.6930385676.

The spelling of 11193281 in words is "eleven million, one hundred ninety-three thousand, two hundred eighty-one".