316131816 has 128 divisors (see below), whose sum is σ = 1061222400. Its totient is φ = 75790080.

The previous prime is 316131793. The next prime is 316131833. The reversal of 316131816 is 618131613.

316131816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

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, 17445 + ... + 30603.

It is an arithmetic number, because the mean of its divisors is an integer number (8290800).

Almost surely, 2^316131816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316131816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530611200).

316131816 is an abundant number, since it is smaller than the sum of its proper divisors (745090584).

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

316131816 is a wasteful number, since it uses less digits than its factorization.

316131816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13199 (or 13195 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 316131816 is about 17780.0960627326. The cubic root of 316131816 is about 681.2231560727.

The spelling of 316131816 in words is "three hundred sixteen million, one hundred thirty-one thousand, eight hundred sixteen".