1224344431 has 4 divisors (see below), whose sum is σ = 1238101200. Its totient is φ = 1210587664.

The previous prime is 1224344413. The next prime is 1224344447. The reversal of 1224344431 is 1344434221.

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 1224344431 - 2⁹ = 1224343919 is a prime.

It is a super-2 number, since 2×1224344431² = 2998038571441427522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224344431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224344731) 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, 6878251 + ... + 6878428.

It is an arithmetic number, because the mean of its divisors is an integer number (309525300).

Almost surely, 2^1224344431 is an apocalyptic number.

1224344431 is a deficient number, since it is larger than the sum of its proper divisors (13756769).

1224344431 is an equidigital number, since it uses as much as digits as its factorization.

1224344431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13756768.

The product of its digits is 9216, while the sum is 28.

The square root of 1224344431 is about 34990.6334752602. The cubic root of 1224344431 is about 1069.7965755885.

Adding to 1224344431 its reverse (1344434221), we get a palindrome (2568778652).

The spelling of 1224344431 in words is "one billion, two hundred twenty-four million, three hundred forty-four thousand, four hundred thirty-one".