197312 has 14 divisors (see below), whose sum is σ = 391668. Its totient is φ = 98624.

The previous prime is 197311. The next prime is 197339. The reversal of 197312 is 213791.

197312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (197311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1478 + ... + 1605.

2¹⁹⁷³¹² is an apocalyptic number.

It is an amenable number.

197312 is a deficient number, since it is larger than the sum of its proper divisors (194356).

197312 is an equidigital number, since it uses as much as digits as its factorization.

197312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095 (or 3085 counting only the distinct ones).

The product of its digits is 378, while the sum is 23.

The square root of 197312 is about 444.1981539809. The cubic root of 197312 is about 58.2171802077.

The spelling of 197312 in words is "one hundred ninety-seven thousand, three hundred twelve".