198731233 has 4 divisors (see below), whose sum is σ = 198765508. Its totient is φ = 198696960.

The previous prime is 198731227. The next prime is 198731237. The reversal of 198731233 is 332137891.

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

It can be written as a sum of positive squares in 2 ways, for example, as 91546624 + 107184609 = 9568^2 + 10353^2 .

It is a cyclic number.

It is not a de Polignac number, because 198731233 - 2²⁵ = 165176801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198731192 and 198731201.

It is not an unprimeable number, because it can be changed into a prime (198731237) 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, 6048 + ... + 20833.

It is an arithmetic number, because the mean of its divisors is an integer number (49691377).

Almost surely, 2^198731233 is an apocalyptic number.

It is an amenable number.

198731233 is a deficient number, since it is larger than the sum of its proper divisors (34275).

198731233 is an equidigital number, since it uses as much as digits as its factorization.

198731233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34274.

The product of its digits is 27216, while the sum is 37.

The square root of 198731233 is about 14097.2065672601. The cubic root of 198731233 is about 583.5642909854.

The spelling of 198731233 in words is "one hundred ninety-eight million, seven hundred thirty-one thousand, two hundred thirty-three".