318303812 has 6 divisors (see below), whose sum is σ = 557031678. Its totient is φ = 159151904.

The previous prime is 318303803. The next prime is 318303829. The reversal of 318303812 is 218303813.

It can be written as a sum of positive squares in only one way, i.e., 300190276 + 18113536 = 17326^2 + 4256^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39787973 + ... + 39787980.

It is an arithmetic number, because the mean of its divisors is an integer number (92838613).

Almost surely, 2^318303812 is an apocalyptic number.

It is an amenable number.

318303812 is a deficient number, since it is larger than the sum of its proper divisors (238727866).

318303812 is a wasteful number, since it uses less digits than its factorization.

318303812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79575957 (or 79575955 counting only the distinct ones).

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

The square root of 318303812 is about 17841.0709319816. The cubic root of 318303812 is about 682.7797201267.

Subtracting from 318303812 its reverse (218303813), we obtain a palindrome (99999999).

The spelling of 318303812 in words is "three hundred eighteen million, three hundred three thousand, eight hundred twelve".