71310173 has 16 divisors (see below), whose sum is σ = 83289600. Its totient is φ = 60364080.

The previous prime is 71310163. The next prime is 71310181. The reversal of 71310173 is 37101317.

It is not a de Polignac number, because 71310173 - 2¹⁰ = 71309149 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 (71310103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9440 + ... + 15222.

It is an arithmetic number, because the mean of its divisors is an integer number (5205600).

Almost surely, 2^71310173 is an apocalyptic number.

It is an amenable number.

71310173 is a deficient number, since it is larger than the sum of its proper divisors (11979427).

71310173 is a wasteful number, since it uses less digits than its factorization.

71310173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872.

The product of its (nonzero) digits is 441, while the sum is 23.

The square root of 71310173 is about 8444.5350967356. The cubic root of 71310173 is about 414.6838895320.

Subtracting from 71310173 its reverse (37101317), we obtain a triangular number (34208856 = T₈₂₇₁).

The spelling of 71310173 in words is "seventy-one million, three hundred ten thousand, one hundred seventy-three".