203103220 has 12 divisors (see below), whose sum is σ = 426516804. Its totient is φ = 81241280.

The previous prime is 203103209. The next prime is 203103247. The reversal of 203103220 is 22301302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32330596 + 170772624 = 5686^2 + 13068^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203103220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5077561 + ... + 5077600.

It is an arithmetic number, because the mean of its divisors is an integer number (35543067).

Almost surely, 2^203103220 is an apocalyptic number.

203103220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203103220 is an abundant number, since it is smaller than the sum of its proper divisors (223413584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203103220 is a wasteful number, since it uses less digits than its factorization.

203103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10155170 (or 10155168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 203103220 is about 14251.4287003093. The cubic root of 203103220 is about 587.8126610994.

Adding to 203103220 its reverse (22301302), we get a palindrome (225404522).

The spelling of 203103220 in words is "two hundred three million, one hundred three thousand, two hundred twenty".