172143323 has 4 divisors (see below), whose sum is σ = 187792728. Its totient is φ = 156493920.

The previous prime is 172143269. The next prime is 172143329. The reversal of 172143323 is 323341271.

172143323 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 not a de Polignac number, because 172143323 - 2⁶ = 172143259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172143292 and 172143301.

It is not an unprimeable number, because it can be changed into a prime (172143329) 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, 7824686 + ... + 7824707.

It is an arithmetic number, because the mean of its divisors is an integer number (46948182).

Almost surely, 2^172143323 is an apocalyptic number.

172143323 is a deficient number, since it is larger than the sum of its proper divisors (15649405).

172143323 is a wasteful number, since it uses less digits than its factorization.

172143323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15649404.

The product of its digits is 3024, while the sum is 26.

The square root of 172143323 is about 13120.3400489469. The cubic root of 172143323 is about 556.2842031235.

Adding to 172143323 its reverse (323341271), we get a palindrome (495484594).

The spelling of 172143323 in words is "one hundred seventy-two million, one hundred forty-three thousand, three hundred twenty-three".