321198 has 32 divisors (see below), whose sum is σ = 705024. Its totient is φ = 97152.

The previous prime is 321193. The next prime is 321199. The reversal of 321198 is 891123.

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 321198.

It is not an unprimeable number, because it can be changed into a prime (321193) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4761 + ... + 4827.

It is an arithmetic number, because the mean of its divisors is an integer number (22032).

2³²¹¹⁹⁸ is an apocalyptic number.

321198 is an abundant number, since it is smaller than the sum of its proper divisors (383826).

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

321198 is a wasteful number, since it uses less digits than its factorization.

321198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136.

The product of its digits is 432, while the sum is 24.

The square root of 321198 is about 566.7433281478. The cubic root of 321198 is about 68.4842878698.

The spelling of 321198 in words is "three hundred twenty-one thousand, one hundred ninety-eight".