168020311 has 2 divisors, whose sum is σ = 168020312. Its totient is φ = 168020310.

The previous prime is 168020269. The next prime is 168020317. The reversal of 168020311 is 113020861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168020311 - 2⁷ = 168020183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168020317) 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 as a sum of consecutive naturals, namely, 84010155 + 84010156.

It is an arithmetic number, because the mean of its divisors is an integer number (84010156).

Almost surely, 2^168020311 is an apocalyptic number.

168020311 is a deficient number, since it is larger than the sum of its proper divisors (1).

168020311 is an equidigital number, since it uses as much as digits as its factorization.

168020311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 168020311 is about 12962.2648869709. The cubic root of 168020311 is about 551.8070710901.

The spelling of 168020311 in words is "one hundred sixty-eight million, twenty thousand, three hundred eleven".