87318203 has 4 divisors (see below), whose sum is σ = 99792240. Its totient is φ = 74844168.

The previous prime is 87318197. The next prime is 87318211. The reversal of 87318203 is 30281378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30281378 = 2 ⋅15140689.

It is not a de Polignac number, because 87318203 - 2¹² = 87314107 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 87318203.

It is not an unprimeable number, because it can be changed into a prime (87318223) 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, 6237008 + ... + 6237021.

It is an arithmetic number, because the mean of its divisors is an integer number (24948060).

Almost surely, 2^87318203 is an apocalyptic number.

87318203 is a deficient number, since it is larger than the sum of its proper divisors (12474037).

87318203 is a wasteful number, since it uses less digits than its factorization.

87318203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12474036.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 87318203 is about 9344.4209558431. The cubic root of 87318203 is about 443.6443242906.

The spelling of 87318203 in words is "eighty-seven million, three hundred eighteen thousand, two hundred three".