197331 has 4 divisors (see below), whose sum is σ = 263112. Its totient is φ = 131552.

The previous prime is 197311. The next prime is 197339. The reversal of 197331 is 133791.

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 197331 - 2⁵ = 197299 is a prime.

It is a super-2 number, since 2×197331² = 77879047122, which contains 22 as substring.

It is a D-number.

197331 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 197331.

It is not an unprimeable number, because it can be changed into a prime (197339) 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, 32886 + ... + 32891.

It is an arithmetic number, because the mean of its divisors is an integer number (65778).

2¹⁹⁷³³¹ is an apocalyptic number.

197331 is a deficient number, since it is larger than the sum of its proper divisors (65781).

197331 is an equidigital number, since it uses as much as digits as its factorization.

197331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65780.

The product of its digits is 567, while the sum is 24.

The square root of 197331 is about 444.2195403176. The cubic root of 197331 is about 58.2190488065.

It can be divided in two parts, 197 and 331, that added together give a triangular number (528 = T₃₂).

The spelling of 197331 in words is "one hundred ninety-seven thousand, three hundred thirty-one".