315173221871 has 8 divisors (see below), whose sum is σ = 331770102000. Its totient is φ = 298577223360.

The previous prime is 315173221859. The next prime is 315173221921. The reversal of 315173221871 is 178122371513.

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

It is a cyclic number.

It is not a de Polignac number, because 315173221871 - 2¹⁸ = 315172959727 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 (315173227871) 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, 589811 + ... + 989051.

It is an arithmetic number, because the mean of its divisors is an integer number (41471262750).

Almost surely, 2^315173221871 is an apocalyptic number.

315173221871 is a deficient number, since it is larger than the sum of its proper divisors (16596880129).

315173221871 is a wasteful number, since it uses less digits than its factorization.

315173221871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440809.

The product of its digits is 70560, while the sum is 41.

The spelling of 315173221871 in words is "three hundred fifteen billion, one hundred seventy-three million, two hundred twenty-one thousand, eight hundred seventy-one".