173387 has 4 divisors (see below), whose sum is σ = 175560. Its totient is φ = 171216.

The previous prime is 173359. The next prime is 173429. The reversal of 173387 is 783371.

173387 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: 783371 = 251 ⋅3121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173387 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 173387.

It is not an unprimeable number, because it can be changed into a prime (173347) 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, 962 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (43890).

2¹⁷³³⁸⁷ is an apocalyptic number.

173387 is a deficient number, since it is larger than the sum of its proper divisors (2173).

173387 is an equidigital number, since it uses as much as digits as its factorization.

173387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172.

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

The square root of 173387 is about 416.3976464871. The cubic root of 173387 is about 55.7620644592.

The spelling of 173387 in words is "one hundred seventy-three thousand, three hundred eighty-seven".