11431224 has 96 divisors (see below), whose sum is σ = 36397920. Its totient is φ = 3172608.

The previous prime is 11431223. The next prime is 11431241. The reversal of 11431224 is 42213411.

11431224 is a `hidden beast` number, since 11 + 431 + 224 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11431197 and 11431206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18342 + ... + 18954.

It is an arithmetic number, because the mean of its divisors is an integer number (379145).

Almost surely, 2^11431224 is an apocalyptic number.

11431224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11431224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18198960).

11431224 is an abundant number, since it is smaller than the sum of its proper divisors (24966696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11431224 is a wasteful number, since it uses less digits than its factorization.

11431224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 662 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11431224 is about 3381.0093167573. The cubic root of 11431224 is about 225.2670015495.

Adding to 11431224 its reverse (42213411), we get a palindrome (53644635).

The spelling of 11431224 in words is "eleven million, four hundred thirty-one thousand, two hundred twenty-four".