231197 has 2 divisors, whose sum is σ = 231198. Its totient is φ = 231196.

The previous prime is 231169. The next prime is 231223. The reversal of 231197 is 791132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219961 + 11236 = 469^2 + 106^2 .

It is a cyclic number.

It is not a de Polignac number, because 231197 - 2⁸ = 230941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115598 + 115599.

It is an arithmetic number, because the mean of its divisors is an integer number (115599).

2²³¹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

231197 is a deficient number, since it is larger than the sum of its proper divisors (1).

231197 is an equidigital number, since it uses as much as digits as its factorization.

231197 is an evil number, because the sum of its binary digits is even.

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

The square root of 231197 is about 480.8294916080. The cubic root of 231197 is about 61.3753617366.

The spelling of 231197 in words is "two hundred thirty-one thousand, one hundred ninety-seven".