173142317 has 4 divisors (see below), whose sum is σ = 173322336. Its totient is φ = 172962300.

The previous prime is 173142301. The next prime is 173142323. The reversal of 173142317 is 713241371.

It is a happy number.

173142317 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, 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: 713241371 = 41 ⋅17396131.

It is a cyclic number.

It is not a de Polignac number, because 173142317 - 2⁴ = 173142301 is a prime.

It is a super-2 number, since 2×173142317² = 59956523872256978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 173142317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173142377) 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, 88559 + ... + 90492.

It is an arithmetic number, because the mean of its divisors is an integer number (43330584).

Almost surely, 2^173142317 is an apocalyptic number.

It is an amenable number.

173142317 is a deficient number, since it is larger than the sum of its proper divisors (180019).

173142317 is an equidigital number, since it uses as much as digits as its factorization.

173142317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180018.

The product of its digits is 3528, while the sum is 29.

The square root of 173142317 is about 13158.3554063568. The cubic root of 173142317 is about 557.3582171440.

Adding to 173142317 its reverse (713241371), we get a palindrome (886383688).

The spelling of 173142317 in words is "one hundred seventy-three million, one hundred forty-two thousand, three hundred seventeen".