109031845 has 16 divisors (see below), whose sum is σ = 147030912. Its totient is φ = 77014080.

The previous prime is 109031837. The next prime is 109031873. The reversal of 109031845 is 548130901.

It is not a de Polignac number, because 109031845 - 2³ = 109031837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34971 + ... + 37960.

It is an arithmetic number, because the mean of its divisors is an integer number (9189432).

Almost surely, 2^109031845 is an apocalyptic number.

It is an amenable number.

109031845 is a deficient number, since it is larger than the sum of its proper divisors (37999067).

109031845 is a wasteful number, since it uses less digits than its factorization.

109031845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72972.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 109031845 is about 10441.8314964378. The cubic root of 109031845 is about 477.7321331412.

The spelling of 109031845 in words is "one hundred nine million, thirty-one thousand, eight hundred forty-five".