173420387311 has 4 divisors (see below), whose sum is σ = 174458832912. Its totient is φ = 172381941712.

The previous prime is 173420387279. The next prime is 173420387321. The reversal of 173420387311 is 113783024371.

173420387311 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.

It is a cyclic number.

It is not a de Polignac number, because 173420387311 - 2⁵ = 173420387279 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 (173420387321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519222550 + ... + 519222883.

It is an arithmetic number, because the mean of its divisors is an integer number (43614708228).

Almost surely, 2^173420387311 is an apocalyptic number.

173420387311 is a deficient number, since it is larger than the sum of its proper divisors (1038445601).

173420387311 is a wasteful number, since it uses less digits than its factorization.

173420387311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038445600.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 173420387311 in words is "one hundred seventy-three billion, four hundred twenty million, three hundred eighty-seven thousand, three hundred eleven".