109123065 has 32 divisors (see below), whose sum is σ = 194428800. Its totient is φ = 58069440.

The previous prime is 109123057. The next prime is 109123067. The reversal of 109123065 is 560321901.

It is not a de Polignac number, because 109123065 - 2³ = 109123057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (109123067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115495 + ... + 116435.

It is an arithmetic number, because the mean of its divisors is an integer number (6075900).

Almost surely, 2^109123065 is an apocalyptic number.

109123065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109123065 is a deficient number, since it is larger than the sum of its proper divisors (85305735).

109123065 is an equidigital number, since it uses as much as digits as its factorization.

109123065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1808 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 109123065 is about 10446.1985908751. The cubic root of 109123065 is about 477.8653253526.

Adding to 109123065 its reverse (560321901), we get a palindrome (669444966).

The spelling of 109123065 in words is "one hundred nine million, one hundred twenty-three thousand, sixty-five".