173023013 has 4 divisors (see below), whose sum is σ = 177046848. Its totient is φ = 168999180.

The previous prime is 173022979. The next prime is 173023021. The reversal of 173023013 is 310320371.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 173023013 - 2⁸ = 173022757 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 (173023073) 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, 2011853 + ... + 2011938.

It is an arithmetic number, because the mean of its divisors is an integer number (44261712).

Almost surely, 2^173023013 is an apocalyptic number.

It is an amenable number.

173023013 is a deficient number, since it is larger than the sum of its proper divisors (4023835).

173023013 is an equidigital number, since it uses as much as digits as its factorization.

173023013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023834.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 173023013 is about 13153.8212318702. The cubic root of 173023013 is about 557.2301715289.

Adding to 173023013 its reverse (310320371), we get a palindrome (483343384).

The spelling of 173023013 in words is "one hundred seventy-three million, twenty-three thousand, thirteen".