43224431 has 4 divisors (see below), whose sum is σ = 43319472. Its totient is φ = 43129392.

The previous prime is 43224409. The next prime is 43224457. The reversal of 43224431 is 13442234.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43224431 - 2¹⁰ = 43223407 is a prime.

It is a super-2 number, since 2×43224431² = 3736702870547522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43224397 and 43224406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43220431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46835 + ... + 47748.

It is an arithmetic number, because the mean of its divisors is an integer number (10829868).

Almost surely, 2^43224431 is an apocalyptic number.

43224431 is a deficient number, since it is larger than the sum of its proper divisors (95041).

43224431 is an equidigital number, since it uses as much as digits as its factorization.

43224431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95040.

The product of its digits is 2304, while the sum is 23.

The square root of 43224431 is about 6574.5289565109. The cubic root of 43224431 is about 350.9482611920.

Adding to 43224431 its reverse (13442234), we get a palindrome (56666665).

The spelling of 43224431 in words is "forty-three million, two hundred twenty-four thousand, four hundred thirty-one".