316400320 has 56 divisors (see below), whose sum is σ = 773820144. Its totient is φ = 123134976.

The previous prime is 316400297. The next prime is 316400327. The reversal of 316400320 is 23004613.

It is a super-2 number, since 2×316400320² = 200218324992204800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (316400327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1522 + ... + 25201.

Almost surely, 2^316400320 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 316400320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386910072).

316400320 is an abundant number, since it is smaller than the sum of its proper divisors (457419824).

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

316400320 is a wasteful number, since it uses less digits than its factorization.

316400320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26777 (or 26767 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 316400320 is about 17787.6451504970. The cubic root of 316400320 is about 681.4159652879.

Adding to 316400320 its reverse (23004613), we get a palindrome (339404933).

The spelling of 316400320 in words is "three hundred sixteen million, four hundred thousand, three hundred twenty".