13723165 has 12 divisors (see below), whose sum is σ = 17495316. Its totient is φ = 10331648.

The previous prime is 13723163. The next prime is 13723183. The reversal of 13723165 is 56132731.

13723165 is nontrivially palindromic in base 16.

13723165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 47961 + 13675204 = 219^2 + 3698^2 .

It is not a de Polignac number, because 13723165 - 2¹ = 13723163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13723163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3304 + ... + 6193.

It is an arithmetic number, because the mean of its divisors is an integer number (1457943).

Almost surely, 2^13723165 is an apocalyptic number.

It is an amenable number.

13723165 is a deficient number, since it is larger than the sum of its proper divisors (3772151).

13723165 is an equidigital number, since it uses as much as digits as its factorization.

13723165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536 (or 9519 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 13723165 is about 3704.4790456959. The cubic root of 13723165 is about 239.4150395339.

Adding to 13723165 its reverse (56132731), we get a palindrome (69855896).

The spelling of 13723165 in words is "thirteen million, seven hundred twenty-three thousand, one hundred sixty-five".