68171311 has 4 divisors (see below), whose sum is σ = 73415272. Its totient is φ = 62927352.

The previous prime is 68171293. The next prime is 68171329. The reversal of 68171311 is 11317186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11317186 = 2 ⋅5658593.

It is an interprime number because it is at equal distance from previous prime (68171293) and next prime (68171329).

It is a cyclic number.

It is not a de Polignac number, because 68171311 - 2¹³ = 68163119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68171311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68171371) 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 3 ways as a sum of consecutive naturals, for example, 2621961 + ... + 2621986.

It is an arithmetic number, because the mean of its divisors is an integer number (18353818).

Almost surely, 2^68171311 is an apocalyptic number.

68171311 is a deficient number, since it is larger than the sum of its proper divisors (5243961).

68171311 is a wasteful number, since it uses less digits than its factorization.

68171311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243960.

The product of its digits is 1008, while the sum is 28.

The square root of 68171311 is about 8256.5919724787. The cubic root of 68171311 is about 408.5079837458.

Adding to 68171311 its reverse (11317186), we get a palindrome (79488497).

It can be divided in two parts, 6817 and 1311, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 68171311 in words is "sixty-eight million, one hundred seventy-one thousand, three hundred eleven".