109805723 has 4 divisors (see below), whose sum is σ = 110243448. Its totient is φ = 109368000.

The previous prime is 109805711. The next prime is 109805743. The reversal of 109805723 is 327508901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327508901 = 10667 ⋅30703.

It is a cyclic number.

It is not a de Polignac number, because 109805723 - 2⁶ = 109805659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109805743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218486 + ... + 218987.

It is an arithmetic number, because the mean of its divisors is an integer number (27560862).

Almost surely, 2^109805723 is an apocalyptic number.

109805723 is a deficient number, since it is larger than the sum of its proper divisors (437725).

109805723 is an equidigital number, since it uses as much as digits as its factorization.

109805723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437724.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 109805723 is about 10478.8225960744. The cubic root of 109805723 is about 478.8597398791.

The spelling of 109805723 in words is "one hundred nine million, eight hundred five thousand, seven hundred twenty-three".