168312123 has 24 divisors (see below), whose sum is σ = 283765248. Its totient is φ = 94130352.

The previous prime is 168312097. The next prime is 168312139. The reversal of 168312123 is 321213861.

It is a happy number.

It is not a de Polignac number, because 168312123 - 2⁶ = 168312059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168312173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25461 + ... + 31382.

It is an arithmetic number, because the mean of its divisors is an integer number (11823552).

Almost surely, 2^168312123 is an apocalyptic number.

168312123 is a deficient number, since it is larger than the sum of its proper divisors (115453125).

168312123 is a wasteful number, since it uses less digits than its factorization.

168312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56903 (or 56900 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 168312123 is about 12973.5162157374. The cubic root of 168312123 is about 552.1263396229.

Adding to 168312123 its reverse (321213861), we get a palindrome (489525984).

It can be divided in two parts, 1683121 and 23, that multiplied together give a palindrome (38711783).

The spelling of 168312123 in words is "one hundred sixty-eight million, three hundred twelve thousand, one hundred twenty-three".