316805865827 has 4 divisors (see below), whose sum is σ = 345606399096. Its totient is φ = 288005332560.

The previous prime is 316805865823. The next prime is 316805865913. The reversal of 316805865827 is 728568508613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 728568508613 = 11 ⋅66233500783.

It is not a de Polignac number, because 316805865827 - 2² = 316805865823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316805865823) 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, 14400266618 + ... + 14400266639.

It is an arithmetic number, because the mean of its divisors is an integer number (86401599774).

Almost surely, 2^316805865827 is an apocalyptic number.

316805865827 is a deficient number, since it is larger than the sum of its proper divisors (28800533269).

316805865827 is a wasteful number, since it uses less digits than its factorization.

316805865827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28800533268.

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 316805865827 in words is "three hundred sixteen billion, eight hundred five million, eight hundred sixty-five thousand, eight hundred twenty-seven".