108431 has 4 divisors (see below), whose sum is σ = 112200. Its totient is φ = 104664.

The previous prime is 108421. The next prime is 108439. The reversal of 108431 is 134801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134801 = 163 ⋅827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108431 is a prime.

It is a super-2 number, since 2×108431² = 23514563522, 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 (108439) 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 3 ways as a sum of consecutive naturals, for example, 1841 + ... + 1898.

It is an arithmetic number, because the mean of its divisors is an integer number (28050).

2¹⁰⁸⁴³¹ is an apocalyptic number.

108431 is a deficient number, since it is larger than the sum of its proper divisors (3769).

108431 is an equidigital number, since it uses as much as digits as its factorization.

108431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 108431 is about 329.2886271950. The cubic root of 108431 is about 47.6852965360.

The spelling of 108431 in words is "one hundred eight thousand, four hundred thirty-one".