68311 has 2 divisors, whose sum is σ = 68312. Its totient is φ = 68310.

The previous prime is 68281. The next prime is 68329. The reversal of 68311 is 11386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68311 - 2⁵ = 68279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34155 + 34156.

It is an arithmetic number, because the mean of its divisors is an integer number (34156).

2⁶⁸³¹¹ is an apocalyptic number.

68311 is a deficient number, since it is larger than the sum of its proper divisors (1).

68311 is an equidigital number, since it uses as much as digits as its factorization.

68311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

The square root of 68311 is about 261.3637312253. The cubic root of 68311 is about 40.8786816287.

Adding to 68311 its reverse (11386), we get a palindrome (79697).

The spelling of 68311 in words is "sixty-eight thousand, three hundred eleven".