68106831 has 12 divisors (see below), whose sum is σ = 98332488. Its totient is φ = 41911584.

The previous prime is 68106817. The next prime is 68106847. The reversal of 68106831 is 13860186.

It is not a de Polignac number, because 68106831 - 2¹¹ = 68104783 is a prime.

It is a super-2 number, since 2×68106831² = 9277080857725122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68106792 and 68106801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68106851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66660 + ... + 67673.

It is an arithmetic number, because the mean of its divisors is an integer number (8194374).

Almost surely, 2^68106831 is an apocalyptic number.

68106831 is a deficient number, since it is larger than the sum of its proper divisors (30225657).

68106831 is a wasteful number, since it uses less digits than its factorization.

68106831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134362 (or 134349 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 68106831 is about 8252.6862899301. The cubic root of 68106831 is about 408.3791470277.

The spelling of 68106831 in words is "sixty-eight million, one hundred six thousand, eight hundred thirty-one".