1228203 has 20 divisors (see below), whose sum is σ = 1873080. Its totient is φ = 801792.

The previous prime is 1228193. The next prime is 1228219. The reversal of 1228203 is 3028221.

It is a happy number.

It is not a de Polignac number, because 1228203 - 2⁴ = 1228187 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1228243) 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 in 19 ways as a sum of consecutive naturals, for example, 4651 + ... + 4907.

It is an arithmetic number, because the mean of its divisors is an integer number (93654).

2^1228203 is an apocalyptic number.

1228203 is a deficient number, since it is larger than the sum of its proper divisors (644877).

1228203 is an equidigital number, since it uses as much as digits as its factorization.

1228203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1228203 is about 1108.2432043554. The cubic root of 1228203 is about 107.0919232193.

Adding to 1228203 its sum of digits (18), we get a palindrome (1228221).

It can be divided in two parts, 1228 and 203, that added together give a triangular number (1431 = T₅₃).

The spelling of 1228203 in words is "one million, two hundred twenty-eight thousand, two hundred three".