173212730306 has 16 divisors (see below), whose sum is σ = 323930301120. Its totient is φ = 67485479280.

The previous prime is 173212730303. The next prime is 173212730311. The reversal of 173212730306 is 603037212371.

It is not an unprimeable number, because it can be changed into a prime (173212730303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562378841 + ... + 562379148.

It is an arithmetic number, because the mean of its divisors is an integer number (20245643820).

Almost surely, 2^173212730306 is an apocalyptic number.

173212730306 is a deficient number, since it is larger than the sum of its proper divisors (150717570814).

173212730306 is a wasteful number, since it uses less digits than its factorization.

173212730306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124758009.

The product of its (nonzero) digits is 31752, while the sum is 35.

Adding to 173212730306 its reverse (603037212371), we get a palindrome (776249942677).

The spelling of 173212730306 in words is "one hundred seventy-three billion, two hundred twelve million, seven hundred thirty thousand, three hundred six".