1020003203 has 2 divisors, whose sum is σ = 1020003204. Its totient is φ = 1020003202.

The previous prime is 1020003181. The next prime is 1020003211. The reversal of 1020003203 is 3023000201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020003203 - 2⁶ = 1020003139 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (1020003233) 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 as a sum of consecutive naturals, namely, 510001601 + 510001602.

It is an arithmetic number, because the mean of its divisors is an integer number (510001602).

Almost surely, 2^1020003203 is an apocalyptic number.

1020003203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020003203 is an equidigital number, since it uses as much as digits as its factorization.

1020003203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 1020003203 is about 31937.4889902134. The cubic root of 1020003203 is about 1006.6237632232.

Adding to 1020003203 its reverse (3023000201), we get a palindrome (4043003404).

The spelling of 1020003203 in words is "one billion, twenty million, three thousand, two hundred three".