316388473 has 2 divisors, whose sum is σ = 316388474. Its totient is φ = 316388472.

The previous prime is 316388419. The next prime is 316388477. The reversal of 316388473 is 374883613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312865344 + 3523129 = 17688^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 316388473 - 2²¹ = 314291321 is a prime.

It is not a weakly prime, because it can be changed into another prime (316388477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158194236 + 158194237.

It is an arithmetic number, because the mean of its divisors is an integer number (158194237).

Almost surely, 2^316388473 is an apocalyptic number.

It is an amenable number.

316388473 is a deficient number, since it is larger than the sum of its proper divisors (1).

316388473 is an equidigital number, since it uses as much as digits as its factorization.

316388473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 316388473 is about 17787.3121353396. The cubic root of 316388473 is about 681.4074604127.

The spelling of 316388473 in words is "three hundred sixteen million, three hundred eighty-eight thousand, four hundred seventy-three".