11224431 has 18 divisors (see below), whose sum is σ = 16681392. Its totient is φ = 7272720.

The previous prime is 11224373. The next prime is 11224439. The reversal of 11224431 is 13442211.

11224431 is a `hidden beast` number, since 11 + 224 + 431 = 666.

It is not a de Polignac number, because 11224431 - 2⁷ = 11224303 is a prime.

It is a super-2 number, since 2×11224431² = 251975702547522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11224439) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11866 + ... + 12776.

It is an arithmetic number, because the mean of its divisors is an integer number (926744).

Almost surely, 2^11224431 is an apocalyptic number.

11224431 is a deficient number, since it is larger than the sum of its proper divisors (5456961).

11224431 is an equidigital number, since it uses as much as digits as its factorization.

11224431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 951 counting only the distinct ones).

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

The square root of 11224431 is about 3350.2881965586. The cubic root of 11224431 is about 223.9003529466.

Adding to 11224431 its reverse (13442211), we get a palindrome (24666642).

The spelling of 11224431 in words is "eleven million, two hundred twenty-four thousand, four hundred thirty-one".