318981012 has 48 divisors (see below), whose sum is σ = 853749120. Its totient is φ = 90801792.

The previous prime is 318981011. The next prime is 318981031. The reversal of 318981012 is 210189813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318981011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16414 + ... + 30122.

It is an arithmetic number, because the mean of its divisors is an integer number (17786440).

Almost surely, 2^318981012 is an apocalyptic number.

It is an amenable number.

318981012 is an abundant number, since it is smaller than the sum of its proper divisors (534768108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318981012 is a wasteful number, since it uses less digits than its factorization.

318981012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14000 (or 13998 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 318981012 is about 17860.0395296315. The cubic root of 318981012 is about 683.2635879374.

The spelling of 318981012 in words is "three hundred eighteen million, nine hundred eighty-one thousand, twelve".