203023220 has 48 divisors (see below), whose sum is σ = 434734608. Its totient is φ = 79626240.

The previous prime is 203023211. The next prime is 203023241. The reversal of 203023220 is 22320302.

203023220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 37797904 + 165225316 = 6148^2 + 12854^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203023195 and 203023204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351572 + ... + 352148.

It is an arithmetic number, because the mean of its divisors is an integer number (9056971).

Almost surely, 2^203023220 is an apocalyptic number.

203023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203023220 is an abundant number, since it is smaller than the sum of its proper divisors (231711388).

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

203023220 is a wasteful number, since it uses less digits than its factorization.

203023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 203023220 is about 14248.6216877283. The cubic root of 203023220 is about 587.7354734368.

Adding to 203023220 its reverse (22320302), we get a palindrome (225343522).

The spelling of 203023220 in words is "two hundred three million, twenty-three thousand, two hundred twenty".