318481318 has 4 divisors (see below), whose sum is σ = 477721980. Its totient is φ = 159240658.

The previous prime is 318481313. The next prime is 318481333. The reversal of 318481318 is 813184813.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318481313) 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, 79620328 + ... + 79620331.

It is an arithmetic number, because the mean of its divisors is an integer number (119430495).

Almost surely, 2^318481318 is an apocalyptic number.

318481318 is a deficient number, since it is larger than the sum of its proper divisors (159240662).

318481318 is a wasteful number, since it uses less digits than its factorization.

318481318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159240661.

The product of its digits is 18432, while the sum is 37.

The square root of 318481318 is about 17846.0448839512. The cubic root of 318481318 is about 682.9066166852.

It can be divided in two parts, 318 and 481318, that added together give a square (481636 = 694²).

The spelling of 318481318 in words is "three hundred eighteen million, four hundred eighty-one thousand, three hundred eighteen".