109318081 has 4 divisors (see below), whose sum is σ = 113087700. Its totient is φ = 105548464.

The previous prime is 109318073. The next prime is 109318117. The reversal of 109318081 is 180813901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180813901 = 9293 ⋅19457.

It can be written as a sum of positive squares in 2 ways, for example, as 20657025 + 88661056 = 4545^2 + 9416^2 .

It is a cyclic number.

It is not a de Polignac number, because 109318081 - 2³ = 109318073 is a prime.

It is a super-2 number, since 2×109318081² = 23900885667045122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109318021) 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, 1884766 + ... + 1884823.

It is an arithmetic number, because the mean of its divisors is an integer number (28271925).

Almost surely, 2^109318081 is an apocalyptic number.

It is an amenable number.

109318081 is a deficient number, since it is larger than the sum of its proper divisors (3769619).

109318081 is an equidigital number, since it uses as much as digits as its factorization.

109318081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769618.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 109318081 is about 10455.5287288592. The cubic root of 109318081 is about 478.1498234851.

The spelling of 109318081 in words is "one hundred nine million, three hundred eighteen thousand, eighty-one".