1224443231 has 8 divisors (see below), whose sum is σ = 1336200528. Its totient is φ = 1112760000.

The previous prime is 1224443197. The next prime is 1224443237. The reversal of 1224443231 is 1323444221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1224443231 - 2¹⁰ = 1224442207 is a prime.

It is a super-2 number, since 2×1224443231² = 2998522451883438722, 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 1224443231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224443237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19451 + ... + 53171.

It is an arithmetic number, because the mean of its divisors is an integer number (167025066).

Almost surely, 2^1224443231 is an apocalyptic number.

1224443231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1224443231 is a deficient number, since it is larger than the sum of its proper divisors (111757297).

1224443231 is a wasteful number, since it uses less digits than its factorization.

1224443231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37033.

The product of its digits is 4608, while the sum is 26.

The square root of 1224443231 is about 34992.0452531715. The cubic root of 1224443231 is about 1069.8253510039.

Adding to 1224443231 its reverse (1323444221), we get a palindrome (2547887452).

The spelling of 1224443231 in words is "one billion, two hundred twenty-four million, four hundred forty-three thousand, two hundred thirty-one".