1023203 has 2 divisors, whose sum is σ = 1023204. Its totient is φ = 1023202.

The previous prime is 1023199. The next prime is 1023221. The reversal of 1023203 is 3023201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023203 - 2² = 1023199 is a prime.

It is a Chen prime.

It is an Ulam number.

It is equal to p₈₀₂₁₀ and since 1023203 and 80210 have the same sum of digits, it is a Honaker prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (1023263) 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, 511601 + 511602.

It is an arithmetic number, because the mean of its divisors is an integer number (511602).

2^1023203 is an apocalyptic number.

1023203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023203 is an equidigital number, since it uses as much as digits as its factorization.

1023203 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 1023203 is about 1011.5349722081. The cubic root of 1023203 is about 100.7675272804.

Adding to 1023203 its reverse (3023201), we get a palindrome (4046404).

The spelling of 1023203 in words is "one million, twenty-three thousand, two hundred three".