109781291 has 8 divisors (see below), whose sum is σ = 116938080. Its totient is φ = 102702208.

The previous prime is 109781281. The next prime is 109781293. The reversal of 109781291 is 192187901.

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 109781291 - 2¹⁰ = 109780267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109781293) 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, 16496 + ... + 22173.

It is an arithmetic number, because the mean of its divisors is an integer number (14617260).

Almost surely, 2^109781291 is an apocalyptic number.

109781291 is a deficient number, since it is larger than the sum of its proper divisors (7156789).

109781291 is a wasteful number, since it uses less digits than its factorization.

109781291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38853.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 109781291 is about 10477.6567513925. The cubic root of 109781291 is about 478.8242214845.

The spelling of 109781291 in words is "one hundred nine million, seven hundred eighty-one thousand, two hundred ninety-one".