13172323 has 4 divisors (see below), whose sum is σ = 13293280. Its totient is φ = 13051368.

The previous prime is 13172321. The next prime is 13172329. The reversal of 13172323 is 32327131.

It is a happy number.

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 13172323 - 2¹ = 13172321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13172294 and 13172303.

It is not an unprimeable number, because it can be changed into a prime (13172321) 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, 60315 + ... + 60532.

It is an arithmetic number, because the mean of its divisors is an integer number (3323320).

Almost surely, 2^13172323 is an apocalyptic number.

13172323 is a deficient number, since it is larger than the sum of its proper divisors (120957).

13172323 is a wasteful number, since it uses less digits than its factorization.

13172323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120956.

The product of its digits is 756, while the sum is 22.

The square root of 13172323 is about 3629.3695044732. The cubic root of 13172323 is about 236.1678579339.

Adding to 13172323 its reverse (32327131), we get a palindrome (45499454).

The spelling of 13172323 in words is "thirteen million, one hundred seventy-two thousand, three hundred twenty-three".