168312012 has 48 divisors (see below), whose sum is σ = 434324352. Its totient is φ = 50302080.

The previous prime is 168311987. The next prime is 168312017. The reversal of 168312012 is 210213861.

It is not an unprimeable number, because it can be changed into a prime (168312017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 903 + ... + 18369.

It is an arithmetic number, because the mean of its divisors is an integer number (9048424).

Almost surely, 2^168312012 is an apocalyptic number.

168312012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168312012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217162176).

168312012 is an abundant number, since it is smaller than the sum of its proper divisors (266012340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168312012 is a wasteful number, since it uses less digits than its factorization.

168312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17558 (or 17556 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 168312012 is about 12973.5119377908. The cubic root of 168312012 is about 552.1262182492.

Adding to 168312012 its reverse (210213861), we get a palindrome (378525873).

It can be divided in two parts, 1683 and 12012, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 168312012 in words is "one hundred sixty-eight million, three hundred twelve thousand, twelve".