316388 has 24 divisors (see below), whose sum is σ = 611520. Its totient is φ = 142560.

The previous prime is 316373. The next prime is 316391. The reversal of 316388 is 883613.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 316388.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 316388.

It is an unprimeable number.

316388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1658 + ... + 1838.

It is an arithmetic number, because the mean of its divisors is an integer number (25480).

2³¹⁶³⁸⁸ is an apocalyptic number.

316388 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

316388 is a deficient number, since it is larger than the sum of its proper divisors (295132).

316388 is a wasteful number, since it uses less digits than its factorization.

316388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 225 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 316388 is about 562.4837775439. The cubic root of 316388 is about 68.1407120845.

The spelling of 316388 in words is "three hundred sixteen thousand, three hundred eighty-eight".