68831 has 4 divisors (see below), whose sum is σ = 78672. Its totient is φ = 58992.

The previous prime is 68821. The next prime is 68863. The reversal of 68831 is 13886.

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

It is a cyclic number.

It is not a de Polignac number, because 68831 - 2⁶ = 68767 is a prime.

It is a super-2 number, since 2×68831² = 9475413122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 68831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68821) 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, 4910 + ... + 4923.

It is an arithmetic number, because the mean of its divisors is an integer number (19668).

2⁶⁸⁸³¹ is an apocalyptic number.

68831 is a deficient number, since it is larger than the sum of its proper divisors (9841).

68831 is an equidigital number, since it uses as much as digits as its factorization.

68831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9840.

The product of its digits is 1152, while the sum is 26.

The square root of 68831 is about 262.3566275130. The cubic root of 68831 is about 40.9821457062.

Subtracting from 68831 its reverse (13886), we obtain a palindrome (54945).

The spelling of 68831 in words is "sixty-eight thousand, eight hundred thirty-one".