13223517173 has 4 divisors (see below), whose sum is σ = 13253639520. Its totient is φ = 13193394828.

The previous prime is 13223517161. The next prime is 13223517199. The reversal of 13223517173 is 37171532231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37171532231 = 521 ⋅71346511.

It is a cyclic number.

It is not a de Polignac number, because 13223517173 - 2⁴ = 13223517157 is a prime.

It is a super-2 number, since 2×13223517173² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223514173) 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, 15060515 + ... + 15061392.

It is an arithmetic number, because the mean of its divisors is an integer number (3313409880).

Almost surely, 2^13223517173 is an apocalyptic number.

It is an amenable number.

13223517173 is a deficient number, since it is larger than the sum of its proper divisors (30122347).

13223517173 is an equidigital number, since it uses as much as digits as its factorization.

13223517173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30122346.

The product of its digits is 26460, while the sum is 35.

The spelling of 13223517173 in words is "thirteen billion, two hundred twenty-three million, five hundred seventeen thousand, one hundred seventy-three".