1223431443 has 12 divisors (see below), whose sum is σ = 1903115760. Its totient is φ = 752880816.

The previous prime is 1223431441. The next prime is 1223431487. The reversal of 1223431443 is 3441343221.

1223431443 is a `hidden beast` number, since 1 + 223 + 431 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 1223431443 - 2¹ = 1223431441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223431441) 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 11 ways as a sum of consecutive naturals, for example, 5228223 + ... + 5228456.

It is an arithmetic number, because the mean of its divisors is an integer number (158592980).

Almost surely, 2^1223431443 is an apocalyptic number.

1223431443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1223431443 is a deficient number, since it is larger than the sum of its proper divisors (679684317).

1223431443 is a wasteful number, since it uses less digits than its factorization.

1223431443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10456698 (or 10456695 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1223431443 is about 34977.5848651676. The cubic root of 1223431443 is about 1069.5305953387.

Adding to 1223431443 its reverse (3441343221), we get a palindrome (4664774664).

The spelling of 1223431443 in words is "one billion, two hundred twenty-three million, four hundred thirty-one thousand, four hundred forty-three".