1223013203 has 4 divisors (see below), whose sum is σ = 1223086800. Its totient is φ = 1222939608.

The previous prime is 1223013191. The next prime is 1223013221. The reversal of 1223013203 is 3023103221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3023103221 = 10723 ⋅281927.

It is a cyclic number.

It is not a de Polignac number, because 1223013203 - 2⁶ = 1223013139 is a prime.

It is a super-2 number, since 2×1223013203² = 2991522589424638418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223013283) 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, 1226 + ... + 49472.

It is an arithmetic number, because the mean of its divisors is an integer number (305771700).

Almost surely, 2^1223013203 is an apocalyptic number.

1223013203 is a deficient number, since it is larger than the sum of its proper divisors (73597).

1223013203 is an equidigital number, since it uses as much as digits as its factorization.

1223013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73596.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1223013203 is about 34971.6056680273. The cubic root of 1223013203 is about 1069.4087055339.

Adding to 1223013203 its reverse (3023103221), we get a palindrome (4246116424).

The spelling of 1223013203 in words is "one billion, two hundred twenty-three million, thirteen thousand, two hundred three".