318212055 has 48 divisors (see below), whose sum is σ = 650717184. Its totient is φ = 140771520.

The previous prime is 318212047. The next prime is 318212101. The reversal of 318212055 is 550212813.

It is a happy number.

It is not a de Polignac number, because 318212055 - 2³ = 318212047 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 6529 + ... + 26058.

It is an arithmetic number, because the mean of its divisors is an integer number (13556608).

Almost surely, 2^318212055 is an apocalyptic number.

318212055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

318212055 is an abundant number, since it is smaller than the sum of its proper divisors (332505129).

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

318212055 is a wasteful number, since it uses less digits than its factorization.

318212055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32636 (or 32633 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 318212055 is about 17838.4992362026. The cubic root of 318212055 is about 682.7141058327.

Adding to 318212055 its reverse (550212813), we get a palindrome (868424868).

The spelling of 318212055 in words is "three hundred eighteen million, two hundred twelve thousand, fifty-five".