168020312 has 8 divisors (see below), whose sum is σ = 315038100. Its totient is φ = 84010152.

The previous prime is 168020311. The next prime is 168020317. The reversal of 168020312 is 213020861.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168020311) 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 as a sum of consecutive naturals, namely, 10501262 + ... + 10501277.

Almost surely, 2^168020312 is an apocalyptic number.

It is an amenable number.

168020312 is a deficient number, since it is larger than the sum of its proper divisors (147017788).

168020312 is a wasteful number, since it uses less digits than its factorization.

168020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21002545 (or 21002541 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 168020312 is about 12962.2649255445. The cubic root of 168020312 is about 551.8070721848.

The spelling of 168020312 in words is "one hundred sixty-eight million, twenty thousand, three hundred twelve".