173213013 has 8 divisors (see below), whose sum is σ = 234114688. Its totient is φ = 113893344.

The previous prime is 173213003. The next prime is 173213039. The reversal of 173213013 is 310312371.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 173213013 - 2⁵ = 173212981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173213003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395245 + ... + 395682.

It is an arithmetic number, because the mean of its divisors is an integer number (29264336).

Almost surely, 2^173213013 is an apocalyptic number.

It is an amenable number.

173213013 is a deficient number, since it is larger than the sum of its proper divisors (60901675).

173213013 is an equidigital number, since it uses as much as digits as its factorization.

173213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791003.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 173213013 is about 13161.0414861439. The cubic root of 173213013 is about 557.4340654125.

Adding to 173213013 its reverse (310312371), we get a palindrome (483525384).

The spelling of 173213013 in words is "one hundred seventy-three million, two hundred thirteen thousand, thirteen".