213931198 has 8 divisors (see below), whose sum is σ = 345581208. Its totient is φ = 98737464.

The previous prime is 213931189. The next prime is 213931219. The reversal of 213931198 is 891139312.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4114036 + ... + 4114087.

It is an arithmetic number, because the mean of its divisors is an integer number (43197651).

Almost surely, 2^213931198 is an apocalyptic number.

213931198 is a deficient number, since it is larger than the sum of its proper divisors (131650010).

213931198 is a wasteful number, since it uses less digits than its factorization.

213931198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8228138.

The product of its digits is 11664, while the sum is 37.

The square root of 213931198 is about 14626.3870453369. The cubic root of 213931198 is about 598.0782942420.

The spelling of 213931198 in words is "two hundred thirteen million, nine hundred thirty-one thousand, one hundred ninety-eight".