199312 has 10 divisors (see below), whose sum is σ = 386198. Its totient is φ = 99648.

The previous prime is 199289. The next prime is 199313. The reversal of 199312 is 213991.

It can be written as a sum of positive squares in only one way, i.e., 190096 + 9216 = 436^2 + 96^2 .

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (199313) by changing a digit.

199312 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213 + ... + 6244.

2¹⁹⁹³¹² is an apocalyptic number.

It is an amenable number.

199312 is a deficient number, since it is larger than the sum of its proper divisors (186886).

199312 is a wasteful number, since it uses less digits than its factorization.

199312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12465 (or 12459 counting only the distinct ones).

The product of its digits is 486, while the sum is 25.

The square root of 199312 is about 446.4437254571. The cubic root of 199312 is about 58.4132202509.

The spelling of 199312 in words is "one hundred ninety-nine thousand, three hundred twelve".