1223143203 has 16 divisors (see below), whose sum is σ = 1642212000. Its totient is φ = 809771520.

The previous prime is 1223143193. The next prime is 1223143247. The reversal of 1223143203 is 3023413221.

It is not a de Polignac number, because 1223143203 - 2⁵ = 1223143171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223143203.

It is not an unprimeable number, because it can be changed into a prime (1223123203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279073 + ... + 283421.

It is an arithmetic number, because the mean of its divisors is an integer number (102638250).

Almost surely, 2^1223143203 is an apocalyptic number.

1223143203 is a deficient number, since it is larger than the sum of its proper divisors (419068797).

1223143203 is a wasteful number, since it uses less digits than its factorization.

1223143203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1223143203 is about 34973.4642693571. The cubic root of 1223143203 is about 1069.4465950693.

Adding to 1223143203 its reverse (3023413221), we get a palindrome (4246556424).

The spelling of 1223143203 in words is "one billion, two hundred twenty-three million, one hundred forty-three thousand, two hundred three".