173385239 has 4 divisors (see below), whose sum is σ = 173458824. Its totient is φ = 173311656.

The previous prime is 173385197. The next prime is 173385323. The reversal of 173385239 is 932583371.

173385239 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 an emirpimes, since its reverse is a distinct semiprime: 932583371 = 1613 ⋅578167.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173385239 is a prime.

It is a super-2 number, since 2×173385239² = 60124882206174242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 173385196 and 173385205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173387239) 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, 33137 + ... + 38010.

It is an arithmetic number, because the mean of its divisors is an integer number (43364706).

Almost surely, 2^173385239 is an apocalyptic number.

173385239 is a deficient number, since it is larger than the sum of its proper divisors (73585).

173385239 is an equidigital number, since it uses as much as digits as its factorization.

173385239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73584.

The product of its digits is 136080, while the sum is 41.

The square root of 173385239 is about 13167.5828837338. The cubic root of 173385239 is about 557.6187567665.

The spelling of 173385239 in words is "one hundred seventy-three million, three hundred eighty-five thousand, two hundred thirty-nine".