1003203 has 6 divisors (see below), whose sum is σ = 1449084. Its totient is φ = 668796.

The previous prime is 1003201. The next prime is 1003241. The reversal of 1003203 is 3023001.

It is a happy number.

It is not a de Polignac number, because 1003203 - 2¹ = 1003201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 111467 = 1003203 / (1 + 0 + 0 + 3 + 2 + 0 + 3).

It is an Ulam number.

1003203 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1003201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55725 + ... + 55742.

It is an arithmetic number, because the mean of its divisors is an integer number (241514).

2^1003203 is an apocalyptic number.

1003203 is a deficient number, since it is larger than the sum of its proper divisors (445881).

1003203 is a wasteful number, since it uses less digits than its factorization.

1003203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111473 (or 111470 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 1003203 is about 1001.6002196485. The cubic root of 1003203 is about 100.1066528779.

Adding to 1003203 its reverse (3023001), we get a palindrome (4026204).

The spelling of 1003203 in words is "one million, three thousand, two hundred three".