316680840 has 160 divisors (see below), whose sum is σ = 1216543680. Its totient is φ = 72379008.

The previous prime is 316680821. The next prime is 316680857. The reversal of 316680840 is 48086613.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 316680795 and 316680804.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15699 + ... + 29661.

It is an arithmetic number, because the mean of its divisors is an integer number (7603398).

Almost surely, 2^316680840 is an apocalyptic number.

316680840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316680840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608271840).

316680840 is an abundant number, since it is smaller than the sum of its proper divisors (899862840).

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

316680840 is a wasteful number, since it uses less digits than its factorization.

316680840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13993 (or 13980 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 316680840 is about 17795.5286518833. The cubic root of 316680840 is about 681.6172865582.

The spelling of 316680840 in words is "three hundred sixteen million, six hundred eighty thousand, eight hundred forty".