172983423 has 4 divisors (see below), whose sum is σ = 230644568. Its totient is φ = 115322280.

The previous prime is 172983403. The next prime is 172983431. The reversal of 172983423 is 324389271.

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

It is not a de Polignac number, because 172983423 - 2⁹ = 172982911 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 (172983403) 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, 28830568 + ... + 28830573.

It is an arithmetic number, because the mean of its divisors is an integer number (57661142).

Almost surely, 2^172983423 is an apocalyptic number.

172983423 is a deficient number, since it is larger than the sum of its proper divisors (57661145).

172983423 is an equidigital number, since it uses as much as digits as its factorization.

172983423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57661144.

The product of its digits is 72576, while the sum is 39.

The square root of 172983423 is about 13152.3162598837. The cubic root of 172983423 is about 557.1876676929.

The spelling of 172983423 in words is "one hundred seventy-two million, nine hundred eighty-three thousand, four hundred twenty-three".