316238605 has 4 divisors (see below), whose sum is σ = 379486332. Its totient is φ = 252990880.

The previous prime is 316238581. The next prime is 316238621. The reversal of 316238605 is 506832613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506832613 = 7 ⋅72404659.

It can be written as a sum of positive squares in 2 ways, for example, as 204661636 + 111576969 = 14306^2 + 10563^2 .

It is not a de Polignac number, because 316238605 - 2²⁵ = 282684173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31623856 + ... + 31623865.

It is an arithmetic number, because the mean of its divisors is an integer number (94871583).

Almost surely, 2^316238605 is an apocalyptic number.

It is an amenable number.

316238605 is a deficient number, since it is larger than the sum of its proper divisors (63247727).

316238605 is an equidigital number, since it uses as much as digits as its factorization.

316238605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63247726.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 316238605 is about 17783.0988581855. The cubic root of 316238605 is about 681.2998529295.

The spelling of 316238605 in words is "three hundred sixteen million, two hundred thirty-eight thousand, six hundred five".