1223203113 has 20 divisors (see below), whose sum is σ = 1993369488. Its totient is φ = 741334680.

The previous prime is 1223203103. The next prime is 1223203139. The reversal of 1223203113 is 3113023221.

It is not a de Polignac number, because 1223203113 - 2⁴ = 1223203097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223203103) 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 19 ways as a sum of consecutive naturals, for example, 685531 + ... + 687312.

Almost surely, 2^1223203113 is an apocalyptic number.

It is an amenable number.

1223203113 is a deficient number, since it is larger than the sum of its proper divisors (770166375).

1223203113 is a wasteful number, since it uses less digits than its factorization.

1223203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372866 (or 1372857 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1223203113 is about 34974.3207653844. The cubic root of 1223203113 is about 1069.4640554122.

Adding to 1223203113 its reverse (3113023221), we get a palindrome (4336226334).

The spelling of 1223203113 in words is "one billion, two hundred twenty-three million, two hundred three thousand, one hundred thirteen".