86106831 has 4 divisors (see below), whose sum is σ = 114809112. Its totient is φ = 57404552.

The previous prime is 86106817. The next prime is 86106851. The reversal of 86106831 is 13860168.

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 86106831 - 2⁵ = 86106799 is a prime.

It is a super-2 number, since 2×86106831² = 14828772689725122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86106792 and 86106801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86106851) 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, 14351136 + ... + 14351141.

It is an arithmetic number, because the mean of its divisors is an integer number (28702278).

Almost surely, 2^86106831 is an apocalyptic number.

86106831 is a deficient number, since it is larger than the sum of its proper divisors (28702281).

86106831 is a wasteful number, since it uses less digits than its factorization.

86106831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28702280.

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

The square root of 86106831 is about 9279.3766493229. The cubic root of 86106831 is about 441.5831929269.

Adding to 86106831 its reverse (13860168), we get a palindrome (99966999).

The spelling of 86106831 in words is "eighty-six million, one hundred six thousand, eight hundred thirty-one".