108309423 has 4 divisors (see below), whose sum is σ = 144412568. Its totient is φ = 72206280.

The previous prime is 108309419. The next prime is 108309437. The reversal of 108309423 is 324903801.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 108309423 - 2² = 108309419 is a prime.

It is a super-2 number, since 2×108309423² = 23461862221185858, 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 (108309623) 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, 18051568 + ... + 18051573.

It is an arithmetic number, because the mean of its divisors is an integer number (36103142).

Almost surely, 2^108309423 is an apocalyptic number.

108309423 is a deficient number, since it is larger than the sum of its proper divisors (36103145).

108309423 is an equidigital number, since it uses as much as digits as its factorization.

108309423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36103144.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 108309423 is about 10407.1813186857. The cubic root of 108309423 is about 476.6746767580.

The spelling of 108309423 in words is "one hundred eight million, three hundred nine thousand, four hundred twenty-three".