108539831 has 4 divisors (see below), whose sum is σ = 110026752. Its totient is φ = 107052912.

The previous prime is 108539803. The next prime is 108539867. The reversal of 108539831 is 138935801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138935801 = 23 ⋅6040687.

It is a cyclic number.

It is not a de Polignac number, because 108539831 - 2²⁶ = 41430967 is a prime.

It is a super-2 number, since 2×108539831² = 23561789827017122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108539891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743351 + ... + 743496.

It is an arithmetic number, because the mean of its divisors is an integer number (27506688).

Almost surely, 2^108539831 is an apocalyptic number.

108539831 is a deficient number, since it is larger than the sum of its proper divisors (1486921).

108539831 is an equidigital number, since it uses as much as digits as its factorization.

108539831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486920.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 108539831 is about 10418.2451017434. The cubic root of 108539831 is about 477.0124493701.

The spelling of 108539831 in words is "one hundred eight million, five hundred thirty-nine thousand, eight hundred thirty-one".