203220197 has 8 divisors (see below), whose sum is σ = 212592600. Its totient is φ = 194005504.

The previous prime is 203220163. The next prime is 203220211. The reversal of 203220197 is 791022302.

203220197 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 4 ways, for example, as 43681 + 203176516 = 209^2 + 14254^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203220197 - 2²⁰ = 202171621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203220697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36788 + ... + 41949.

It is an arithmetic number, because the mean of its divisors is an integer number (26574075).

Almost surely, 2^203220197 is an apocalyptic number.

It is an amenable number.

203220197 is a deficient number, since it is larger than the sum of its proper divisors (9372403).

203220197 is an equidigital number, since it uses as much as digits as its factorization.

203220197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78855.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 203220197 is about 14255.5321542200. The cubic root of 203220197 is about 587.9254893862.

Adding to 203220197 its reverse (791022302), we get a palindrome (994242499).

The spelling of 203220197 in words is "two hundred three million, two hundred twenty thousand, one hundred ninety-seven".