203221130 has 24 divisors (see below), whose sum is σ = 425521188. Its totient is φ = 69675648.

The previous prime is 203221097. The next prime is 203221153. The reversal of 203221130 is 31122302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 183087961 + 20133169 = 13531^2 + 4487^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206879 + ... + 207858.

Almost surely, 2^203221130 is an apocalyptic number.

203221130 is an abundant number, since it is smaller than the sum of its proper divisors (222300058).

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

203221130 is a wasteful number, since it uses less digits than its factorization.

203221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414758 (or 414751 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 203221130 is about 14255.5648783203. The cubic root of 203221130 is about 587.9263891223.

Adding to 203221130 its reverse (31122302), we get a palindrome (234343432).

The spelling of 203221130 in words is "two hundred three million, two hundred twenty-one thousand, one hundred thirty".