109688723 has 4 divisors (see below), whose sum is σ = 109731000. Its totient is φ = 109646448.

The previous prime is 109688713. The next prime is 109688779. The reversal of 109688723 is 327886901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109688723 is a prime.

It is a super-4 number, since 4×109688723⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109688713) 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, 16973 + ... + 22526.

It is an arithmetic number, because the mean of its divisors is an integer number (27432750).

Almost surely, 2^109688723 is an apocalyptic number.

109688723 is a deficient number, since it is larger than the sum of its proper divisors (42277).

109688723 is an equidigital number, since it uses as much as digits as its factorization.

109688723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42276.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 109688723 is about 10473.2384198967. The cubic root of 109688723 is about 478.6896015082.

It can be divided in two parts, 10968 and 8723, that added together give a palindrome (19691).

The spelling of 109688723 in words is "one hundred nine million, six hundred eighty-eight thousand, seven hundred twenty-three".