210231131210171 has 2 divisors, whose sum is σ = 210231131210172. Its totient is φ = 210231131210170.

The previous prime is 210231131210161. The next prime is 210231131210189. The reversal of 210231131210171 is 171012131132012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210231131210171 - 2⁴⁶ = 139862387032507 is a prime.

It is a super-2 number, since 2×210231131210171² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210231131210171.

It is not a weakly prime, because it can be changed into another prime (210231131210161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105115565605085 + 105115565605086.

It is an arithmetic number, because the mean of its divisors is an integer number (105115565605086).

Almost surely, 2^{210231131210171} is an apocalyptic number.

210231131210171 is a deficient number, since it is larger than the sum of its proper divisors (1).

210231131210171 is an equidigital number, since it uses as much as digits as its factorization.

210231131210171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

Adding to 210231131210171 its reverse (171012131132012), we get a palindrome (381243262342183).

The spelling of 210231131210171 in words is "two hundred ten trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred ten thousand, one hundred seventy-one".