1203320203 has 2 divisors, whose sum is σ = 1203320204. Its totient is φ = 1203320202.

The previous prime is 1203320191. The next prime is 1203320219. The reversal of 1203320203 is 3020233021.

It is an a-pointer prime, because the next prime (1203320219) can be obtained adding 1203320203 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1203320203 - 2²⁵ = 1169765771 is a prime.

It is a super-2 number, since 2×1203320203² = 2895959021895922418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1203320243) 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 as a sum of consecutive naturals, namely, 601660101 + 601660102.

It is an arithmetic number, because the mean of its divisors is an integer number (601660102).

Almost surely, 2^1203320203 is an apocalyptic number.

1203320203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203320203 is an equidigital number, since it uses as much as digits as its factorization.

1203320203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1203320203 is about 34688.9060507823. The cubic root of 1203320203 is about 1063.6377339436.

Adding to 1203320203 its reverse (3020233021), we get a palindrome (4223553224).

The spelling of 1203320203 in words is "one billion, two hundred three million, three hundred twenty thousand, two hundred three".