316808321820 has 96 divisors (see below), whose sum is σ = 894105838080. Its totient is φ = 83813748480.

The previous prime is 316808321789. The next prime is 316808321891. The reversal of 316808321820 is 28123808613.

It is a super-2 number, since 2×316808321820² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4515529 + ... + 4585151.

It is an arithmetic number, because the mean of its divisors is an integer number (9313602480).

Almost surely, 2^316808321820 is an apocalyptic number.

316808321820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

316808321820 is an abundant number, since it is smaller than the sum of its proper divisors (577297516260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

316808321820 is a wasteful number, since it uses less digits than its factorization.

316808321820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70235 (or 70233 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 316808321820 in words is "three hundred sixteen billion, eight hundred eight million, three hundred twenty-one thousand, eight hundred twenty".