210231131210197 has 2 divisors, whose sum is σ = 210231131210198. Its totient is φ = 210231131210196.

The previous prime is 210231131210189. The next prime is 210231131210231. The reversal of 210231131210197 is 791012131132012.

It is an a-pointer prime, because the next prime (210231131210231) can be obtained adding 210231131210197 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206581231768356 + 3649899441841 = 14372934^2 + 1910471^2 .

It is a cyclic number.

It is not a de Polignac number, because 210231131210197 - 2³ = 210231131210189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210231131210897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105115565605098 + 105115565605099.

It is an arithmetic number, because the mean of its divisors is an integer number (105115565605099).

Almost surely, 2^{210231131210197} is an apocalyptic number.

It is an amenable number.

210231131210197 is a deficient number, since it is larger than the sum of its proper divisors (1).

210231131210197 is an equidigital number, since it uses as much as digits as its factorization.

210231131210197 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 34.

The spelling of 210231131210197 in words is "two hundred ten trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred ten thousand, one hundred ninety-seven".