108248309 has 4 divisors (see below), whose sum is σ = 116575116. Its totient is φ = 99921504.

The previous prime is 108248291. The next prime is 108248341. The reversal of 108248309 is 903842801.

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: 903842801 = 1759 ⋅513839.

It can be written as a sum of positive squares in 2 ways, for example, as 6682225 + 101566084 = 2585^2 + 10078^2 .

It is a cyclic number.

It is not a de Polignac number, because 108248309 - 2¹⁶ = 108182773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108245309) 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, 4163384 + ... + 4163409.

It is an arithmetic number, because the mean of its divisors is an integer number (29143779).

Almost surely, 2^108248309 is an apocalyptic number.

It is an amenable number.

108248309 is a deficient number, since it is larger than the sum of its proper divisors (8326807).

108248309 is an equidigital number, since it uses as much as digits as its factorization.

108248309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326806.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 108248309 is about 10404.2447587511. The cubic root of 108248309 is about 476.5850047292.

The spelling of 108248309 in words is "one hundred eight million, two hundred forty-eight thousand, three hundred nine".