11783121 has 8 divisors (see below), whose sum is σ = 17955264. Its totient is φ = 6733200.

The previous prime is 11783117. The next prime is 11783129. The reversal of 11783121 is 12138711.

It is a happy number.

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

It is not a de Polignac number, because 11783121 - 2² = 11783117 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11783091 and 11783100.

It is not an unprimeable number, because it can be changed into a prime (11783129) 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, 280530 + ... + 280571.

It is an arithmetic number, because the mean of its divisors is an integer number (2244408).

Almost surely, 2^11783121 is an apocalyptic number.

It is an amenable number.

11783121 is a deficient number, since it is larger than the sum of its proper divisors (6172143).

11783121 is an equidigital number, since it uses as much as digits as its factorization.

11783121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561111.

The product of its digits is 336, while the sum is 24.

The square root of 11783121 is about 3432.6550948209. The cubic root of 11783121 is about 227.5552077906. Note that the first 3 decimals are identical.

It can be divided in two parts, 117 and 83121, that added together give a palindrome (83238).

The spelling of 11783121 in words is "eleven million, seven hundred eighty-three thousand, one hundred twenty-one".