168601630231 has 2 divisors, whose sum is σ = 168601630232. Its totient is φ = 168601630230.

The previous prime is 168601630123. The next prime is 168601630259. The reversal of 168601630231 is 132036106861.

Together with previous prime (168601630123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168601630231 - 2¹⁷ = 168601499159 is a prime.

It is a super-2 number, since 2×168601630231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168601630261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84300815115 + 84300815116.

It is an arithmetic number, because the mean of its divisors is an integer number (84300815116).

Almost surely, 2^168601630231 is an apocalyptic number.

168601630231 is a deficient number, since it is larger than the sum of its proper divisors (1).

168601630231 is an equidigital number, since it uses as much as digits as its factorization.

168601630231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 168601630231 in words is "one hundred sixty-eight billion, six hundred one million, six hundred thirty thousand, two hundred thirty-one".