198430312 has 16 divisors (see below), whose sum is σ = 372212100. Its totient is φ = 99173760.

The previous prime is 198430301. The next prime is 198430313. The reversal of 198430312 is 213034891.

It can be written as a sum of positive squares in 2 ways, for example, as 198077476 + 352836 = 14074^2 + 594^2 .

It is not an unprimeable number, because it can be changed into a prime (198430313) 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, 26862 + ... + 33442.

Almost surely, 2^198430312 is an apocalyptic number.

It is an amenable number.

198430312 is a deficient number, since it is larger than the sum of its proper divisors (173781788).

198430312 is a wasteful number, since it uses less digits than its factorization.

198430312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10356 (or 10352 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 198430312 is about 14086.5294519268. The cubic root of 198430312 is about 583.2695957208.

The spelling of 198430312 in words is "one hundred ninety-eight million, four hundred thirty thousand, three hundred twelve".