1020303 has 32 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 617760.

The previous prime is 1020301. The next prime is 1020329. The reversal of 1020303 is 3030201.

It is a happy number.

It is not a de Polignac number, because 1020303 - 2¹ = 1020301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

1020303 is a modest number, since divided by 303 gives 102 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19225 + ... + 19277.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2^1020303 is an apocalyptic number.

1020303 is a deficient number, since it is larger than the sum of its proper divisors (638577).

1020303 is a wasteful number, since it uses less digits than its factorization.

1020303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 110 counting only the distinct ones).

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

The square root of 1020303 is about 1010.1004900504. The cubic root of 1020303 is about 100.6722375078.

Adding to 1020303 its reverse (3030201), we get a palindrome (4050504).

The spelling of 1020303 in words is "one million, twenty thousand, three hundred three".