203223220 has 12 divisors (see below), whose sum is σ = 426768804. Its totient is φ = 81289280.

The previous prime is 203223217. The next prime is 203223233. The reversal of 203223220 is 22322302.

It can be written as a sum of positive squares in 2 ways, for example, as 139287204 + 63936016 = 11802^2 + 7996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203223194 and 203223203.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5080561 + ... + 5080600.

It is an arithmetic number, because the mean of its divisors is an integer number (35564067).

Almost surely, 2^203223220 is an apocalyptic number.

203223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203223220 is an abundant number, since it is smaller than the sum of its proper divisors (223545584).

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

203223220 is a wasteful number, since it uses less digits than its factorization.

203223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161170 (or 10161168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 203223220 is about 14255.6381828384. The cubic root of 203223220 is about 587.9284045983.

Adding to 203223220 its reverse (22322302), we get a palindrome (225545522).

It can be divided in two parts, 2032 and 23220, that added together give a palindrome (25252).

The spelling of 203223220 in words is "two hundred three million, two hundred twenty-three thousand, two hundred twenty".