108805931 has 4 divisors (see below), whose sum is σ = 117175632. Its totient is φ = 100436232.

The previous prime is 108805903. The next prime is 108805969. The reversal of 108805931 is 139508801.

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

It is not a de Polignac number, because 108805931 - 2¹⁴ = 108789547 is a prime.

It is a super-2 number, since 2×108805931² = 23677461241553522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 108805891 and 108805900.

It is not an unprimeable number, because it can be changed into a prime (108805901) 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, 4184831 + ... + 4184856.

It is an arithmetic number, because the mean of its divisors is an integer number (29293908).

Almost surely, 2^108805931 is an apocalyptic number.

108805931 is a deficient number, since it is larger than the sum of its proper divisors (8369701).

108805931 is an equidigital number, since it uses as much as digits as its factorization.

108805931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369700.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 108805931 is about 10431.0081487841. The cubic root of 108805931 is about 477.4019513055.

The spelling of 108805931 in words is "one hundred eight million, eight hundred five thousand, nine hundred thirty-one".