198080331 has 4 divisors (see below), whose sum is σ = 264107112. Its totient is φ = 132053552.

The previous prime is 198080327. The next prime is 198080357. The reversal of 198080331 is 133080891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198080331 - 2² = 198080327 is a prime.

It is a super-2 number, since 2×198080331² = 78471635058139122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198080292 and 198080301.

It is not an unprimeable number, because it can be changed into a prime (198080321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33013386 + ... + 33013391.

It is an arithmetic number, because the mean of its divisors is an integer number (66026778).

Almost surely, 2^198080331 is an apocalyptic number.

198080331 is a deficient number, since it is larger than the sum of its proper divisors (66026781).

198080331 is an equidigital number, since it uses as much as digits as its factorization.

198080331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66026780.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 198080331 is about 14074.1014277999. The cubic root of 198080331 is about 582.9264804557.

The spelling of 198080331 in words is "one hundred ninety-eight million, eighty thousand, three hundred thirty-one".