203132220 has 72 divisors (see below), whose sum is σ = 584794224. Its totient is φ = 52683264.

The previous prime is 203132213. The next prime is 203132227. The reversal of 203132220 is 22231302.

203132220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (203132213) and next prime (203132227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 203132220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203132227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80904 + ... + 83376.

It is an arithmetic number, because the mean of its divisors is an integer number (8122142).

Almost surely, 2^203132220 is an apocalyptic number.

203132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292397112).

203132220 is an abundant number, since it is smaller than the sum of its proper divisors (381662004).

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

203132220 is a wasteful number, since it uses less digits than its factorization.

203132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2520 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 203132220 is about 14252.4461058444. The cubic root of 203132220 is about 587.8406366216.

Adding to 203132220 its reverse (22231302), we get a palindrome (225363522).

The spelling of 203132220 in words is "two hundred three million, one hundred thirty-two thousand, two hundred twenty".