331198 has 16 divisors (see below), whose sum is σ = 582624. Its totient is φ = 138240.

The previous prime is 331183. The next prime is 331207. The reversal of 331198 is 891133.

331198 = T₁₆₇ + T₁₆₈ + ... + T₁₈₇.

It is a congruent number.

It is an unprimeable number.

331198 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 7 ways as a sum of consecutive naturals, for example, 286 + ... + 862.

It is an arithmetic number, because the mean of its divisors is an integer number (36414).

2³³¹¹⁹⁸ is an apocalyptic number.

331198 is a deficient number, since it is larger than the sum of its proper divisors (251426).

331198 is a wasteful number, since it uses less digits than its factorization.

331198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627.

The product of its digits is 648, while the sum is 25.

The square root of 331198 is about 575.4980451748. The cubic root of 331198 is about 69.1877544126.

It can be divided in two parts, 331 and 198, that added together give a square (529 = 23²).

The spelling of 331198 in words is "three hundred thirty-one thousand, one hundred ninety-eight".