87318271 has 4 divisors (see below), whose sum is σ = 87946600. Its totient is φ = 86689944.

The previous prime is 87318247. The next prime is 87318277. The reversal of 87318271 is 17281378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17281378 = 2 ⋅8640689.

It is a cyclic number.

It is not a de Polignac number, because 87318271 - 2²⁵ = 53763839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87318271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87318277) 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, 313956 + ... + 314233.

It is an arithmetic number, because the mean of its divisors is an integer number (21986650).

Almost surely, 2^87318271 is an apocalyptic number.

87318271 is a deficient number, since it is larger than the sum of its proper divisors (628329).

87318271 is a wasteful number, since it uses less digits than its factorization.

87318271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628328.

The product of its digits is 18816, while the sum is 37.

The square root of 87318271 is about 9344.4245943771. The cubic root of 87318271 is about 443.6444394548.

The spelling of 87318271 in words is "eighty-seven million, three hundred eighteen thousand, two hundred seventy-one".