318478322 has 6 divisors (see below), whose sum is σ = 477755343. Its totient is φ = 159226542.

The previous prime is 318478313. The next prime is 318478327. The reversal of 318478322 is 223874813.

It can be written as a sum of positive squares in only one way, i.e., 159239161 + 159239161 = 12619^2 + 12619^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=12619.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318478327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18929 + ... + 31547.

Almost surely, 2^318478322 is an apocalyptic number.

318478322 is a deficient number, since it is larger than the sum of its proper divisors (159277021).

318478322 is an frugal number, since it uses more digits than its factorization.

318478322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25240 (or 12621 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 318478322 is about 17845.9609435861. The cubic root of 318478322 is about 682.9044752779.

The spelling of 318478322 in words is "three hundred eighteen million, four hundred seventy-eight thousand, three hundred twenty-two".