213105198 has 16 divisors (see below), whose sum is σ = 426474576. Its totient is φ = 70991040.

The previous prime is 213105133. The next prime is 213105203. The reversal of 213105198 is 891501312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388 + ... + 20648.

It is an arithmetic number, because the mean of its divisors is an integer number (26654661).

Almost surely, 2^213105198 is an apocalyptic number.

213105198 is an abundant number, since it is smaller than the sum of its proper divisors (213369378).

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

213105198 is a wasteful number, since it uses less digits than its factorization.

213105198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22019.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 213105198 is about 14598.1230985356. The cubic root of 213105198 is about 597.3075638291.

The spelling of 213105198 in words is "two hundred thirteen million, one hundred five thousand, one hundred ninety-eight".