109056981 has 8 divisors (see below), whose sum is σ = 158628384. Its totient is φ = 66095120.

The previous prime is 109056973. The next prime is 109057009. The reversal of 109056981 is 189650901.

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 109056981 - 2³ = 109056973 is a prime.

It is a super-2 number, since 2×109056981² = 23786850209668722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109056911) 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 7 ways as a sum of consecutive naturals, for example, 1652346 + ... + 1652411.

It is an arithmetic number, because the mean of its divisors is an integer number (19828548).

Almost surely, 2^109056981 is an apocalyptic number.

109056981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109056981 is a deficient number, since it is larger than the sum of its proper divisors (49571403).

109056981 is a wasteful number, since it uses less digits than its factorization.

109056981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304771.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 109056981 is about 10443.0350473414. The cubic root of 109056981 is about 477.7688421480.

The spelling of 109056981 in words is "one hundred nine million, fifty-six thousand, nine hundred eighty-one".