11193481 has 4 divisors (see below), whose sum is σ = 12054532. Its totient is φ = 10332432.

The previous prime is 11193467. The next prime is 11193487. The reversal of 11193481 is 18439111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18439111 = 271 ⋅68041.

It can be written as a sum of positive squares in 2 ways, for example, as 3575881 + 7617600 = 1891^2 + 2760^2 .

It is a cyclic number.

It is not a de Polignac number, because 11193481 - 2⁷ = 11193353 is a prime.

It is a super-2 number, since 2×11193481² = 250588033794722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11193487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430506 + ... + 430531.

It is an arithmetic number, because the mean of its divisors is an integer number (3013633).

Almost surely, 2^11193481 is an apocalyptic number.

It is an amenable number.

11193481 is a deficient number, since it is larger than the sum of its proper divisors (861051).

11193481 is an equidigital number, since it uses as much as digits as its factorization.

11193481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861050.

The product of its digits is 864, while the sum is 28.

The square root of 11193481 is about 3345.6660024575. Note that the first 3 decimals coincide. The cubic root of 11193481 is about 223.6943708651.

The spelling of 11193481 in words is "eleven million, one hundred ninety-three thousand, four hundred eighty-one".