198941331 has 8 divisors (see below), whose sum is σ = 265619920. Its totient is φ = 132445152.

The previous prime is 198941299. The next prime is 198941339. The reversal of 198941331 is 133149891.

It is a happy number.

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

It is not a de Polignac number, because 198941331 - 2⁵ = 198941299 is a prime.

It is a super-2 number, since 2×198941331² = 79155306360103122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198941331.

It is not an unprimeable number, because it can be changed into a prime (198941339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43036 + ... + 47433.

It is an arithmetic number, because the mean of its divisors is an integer number (33202490).

Almost surely, 2^198941331 is an apocalyptic number.

198941331 is a deficient number, since it is larger than the sum of its proper divisors (66678589).

198941331 is an equidigital number, since it uses as much as digits as its factorization.

198941331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91205.

The product of its digits is 23328, while the sum is 39.

The square root of 198941331 is about 14104.6563588058. The cubic root of 198941331 is about 583.7698659686.

The spelling of 198941331 in words is "one hundred ninety-eight million, nine hundred forty-one thousand, three hundred thirty-one".