109281313 has 8 divisors (see below), whose sum is σ = 112470120. Its totient is φ = 106104960.

The previous prime is 109281281. The next prime is 109281371. The reversal of 109281313 is 313182901.

It can be written as a sum of positive squares in 4 ways, for example, as 14569489 + 94711824 = 3817^2 + 9732^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109281313 - 2⁵ = 109281281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109281713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16443 + ... + 22111.

It is an arithmetic number, because the mean of its divisors is an integer number (14058765).

Almost surely, 2^109281313 is an apocalyptic number.

It is an amenable number.

109281313 is a deficient number, since it is larger than the sum of its proper divisors (3188807).

109281313 is an equidigital number, since it uses as much as digits as its factorization.

109281313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 109281313 is about 10453.7702767949. The cubic root of 109281313 is about 478.0962105666.

The spelling of 109281313 in words is "one hundred nine million, two hundred eighty-one thousand, three hundred thirteen".