109281 has 8 divisors (see below), whose sum is σ = 148000. Its totient is φ = 71712.

The previous prime is 109279. The next prime is 109297. The reversal of 109281 is 182901.

109281 = T₁₄ + T₁₅ + ... + T₈₆.

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

It is not a de Polignac number, because 109281 - 2¹ = 109279 is a prime.

It is a super-2 number, since 2×109281² = 23884673922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109281.

It is not an unprimeable number, because it can be changed into a prime (109201) 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, 31 + ... + 468.

It is an arithmetic number, because the mean of its divisors is an integer number (18500).

2¹⁰⁹²⁸¹ is an apocalyptic number.

It is an amenable number.

109281 is a deficient number, since it is larger than the sum of its proper divisors (38719).

109281 is an equidigital number, since it uses as much as digits as its factorization.

109281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 109281 is about 330.5767686937. The cubic root of 109281 is about 47.8095754117.

The spelling of 109281 in words is "one hundred nine thousand, two hundred eighty-one".