68331 has 4 divisors (see below), whose sum is σ = 91112. Its totient is φ = 45552.

The previous prime is 68329. The next prime is 68351. The reversal of 68331 is 13386.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68331 - 2¹ = 68329 is a prime.

It is a super-2 number, since 2×68331² = 9338251122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68298 and 68307.

It is not an unprimeable number, because it can be changed into a prime (68311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11386 + ... + 11391.

It is an arithmetic number, because the mean of its divisors is an integer number (22778).

2⁶⁸³³¹ is an apocalyptic number.

68331 is a deficient number, since it is larger than the sum of its proper divisors (22781).

68331 is a wasteful number, since it uses less digits than its factorization.

68331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22780.

The product of its digits is 432, while the sum is 21.

The square root of 68331 is about 261.4019892809. The cubic root of 68331 is about 40.8826707073.

Subtracting from 68331 its reverse (13386), we obtain a palindrome (54945).

The spelling of 68331 in words is "sixty-eight thousand, three hundred thirty-one".