11823217 has 4 divisors (see below), whose sum is σ = 13512256. Its totient is φ = 10134180.

The previous prime is 11823209. The next prime is 11823241. The reversal of 11823217 is 71232811.

It is a happy number.

11823217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11823217 - 2³ = 11823209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11823191 and 11823200.

It is not an unprimeable number, because it can be changed into a prime (11823247) 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, 844509 + ... + 844522.

It is an arithmetic number, because the mean of its divisors is an integer number (3378064).

Almost surely, 2^11823217 is an apocalyptic number.

It is an amenable number.

11823217 is a deficient number, since it is larger than the sum of its proper divisors (1689039).

11823217 is an equidigital number, since it uses as much as digits as its factorization.

11823217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689038.

The product of its digits is 672, while the sum is 25.

The square root of 11823217 is about 3438.4905118380. The cubic root of 11823217 is about 227.8130264087.

The spelling of 11823217 in words is "eleven million, eight hundred twenty-three thousand, two hundred seventeen".