86531109 has 12 divisors (see below), whose sum is σ = 134211744. Its totient is φ = 49446264.

The previous prime is 86531101. The next prime is 86531117. The reversal of 86531109 is 90113568.

It is an interprime number because it is at equal distance from previous prime (86531101) and next prime (86531117).

It is not a de Polignac number, because 86531109 - 2³ = 86531101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86531109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86531101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294177 + ... + 294470.

It is an arithmetic number, because the mean of its divisors is an integer number (11184312).

Almost surely, 2^86531109 is an apocalyptic number.

It is an amenable number.

86531109 is a deficient number, since it is larger than the sum of its proper divisors (47680635).

86531109 is a wasteful number, since it uses less digits than its factorization.

86531109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588664 (or 588657 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 86531109 is about 9302.2098987284. The cubic root of 86531109 is about 442.3072824177.

The spelling of 86531109 in words is "eighty-six million, five hundred thirty-one thousand, one hundred nine".