203198 has 4 divisors (see below), whose sum is σ = 304800. Its totient is φ = 101598.

The previous prime is 203183. The next prime is 203207. The reversal of 203198 is 891302.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 203198.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50798 + ... + 50801.

It is an arithmetic number, because the mean of its divisors is an integer number (76200).

2²⁰³¹⁹⁸ is an apocalyptic number.

203198 is a deficient number, since it is larger than the sum of its proper divisors (101602).

203198 is a wasteful number, since it uses less digits than its factorization.

203198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101601.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 203198 is about 450.7748883867. The cubic root of 203198 is about 58.7904082955.

The spelling of 203198 in words is "two hundred three thousand, one hundred ninety-eight".