316218540 has 96 divisors (see below), whose sum is σ = 969889536. Its totient is φ = 76343040.

The previous prime is 316218509. The next prime is 316218557. The reversal of 316218540 is 45812613.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 316218498 and 316218507.

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, 185934 + ... + 187626.

It is an arithmetic number, because the mean of its divisors is an integer number (10103016).

Almost surely, 2^316218540 is an apocalyptic number.

316218540 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 316218540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484944768).

316218540 is an abundant number, since it is smaller than the sum of its proper divisors (653670996).

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

316218540 is a wasteful number, since it uses less digits than its factorization.

316218540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 316218540 is about 17782.5346899704. The cubic root of 316218540 is about 681.2854433766.

The spelling of 316218540 in words is "three hundred sixteen million, two hundred eighteen thousand, five hundred forty".