231602197 has 2 divisors, whose sum is σ = 231602198. Its totient is φ = 231602196.

The previous prime is 231602179. The next prime is 231602221. The reversal of 231602197 is 791206132.

Together with previous prime (231602179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132917841 + 98684356 = 11529^2 + 9934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231602197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231602117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115801098 + 115801099.

It is an arithmetic number, because the mean of its divisors is an integer number (115801099).

Almost surely, 2^231602197 is an apocalyptic number.

It is an amenable number.

231602197 is a deficient number, since it is larger than the sum of its proper divisors (1).

231602197 is an equidigital number, since it uses as much as digits as its factorization.

231602197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 231602197 is about 15218.4820859375. The cubic root of 231602197 is about 614.1119639708. Note that the first 3 decimals are identical.

The spelling of 231602197 in words is "two hundred thirty-one million, six hundred two thousand, one hundred ninety-seven".