13171723 has 4 divisors (see below), whose sum is σ = 13228488. Its totient is φ = 13114960.

The previous prime is 13171721. The next prime is 13171729. The reversal of 13171723 is 32717131.

13171723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13171723 - 2¹ = 13171721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13171721) 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, 28033 + ... + 28498.

It is an arithmetic number, because the mean of its divisors is an integer number (3307122).

Almost surely, 2^13171723 is an apocalyptic number.

13171723 is a deficient number, since it is larger than the sum of its proper divisors (56765).

13171723 is an equidigital number, since it uses as much as digits as its factorization.

13171723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56764.

The product of its digits is 882, while the sum is 25.

The square root of 13171723 is about 3629.2868445467. The cubic root of 13171723 is about 236.1642720600.

Adding to 13171723 its reverse (32717131), we get a palindrome (45888854).

It can be divided in two parts, 131717 and 23, that multiplied together give a triangular number (3029491 = T₂₄₆₁).

The spelling of 13171723 in words is "thirteen million, one hundred seventy-one thousand, seven hundred twenty-three".