313212212 has 12 divisors (see below), whose sum is σ = 549426276. Its totient is φ = 156233280.

The previous prime is 313212077. The next prime is 313212227. The reversal of 313212212 is 212212313.

It can be written as a sum of positive squares in 2 ways, for example, as 128958736 + 184253476 = 11356^2 + 13574^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91313 + ... + 94680.

It is an arithmetic number, because the mean of its divisors is an integer number (45785523).

Almost surely, 2^313212212 is an apocalyptic number.

It is an amenable number.

313212212 is a deficient number, since it is larger than the sum of its proper divisors (236214064).

313212212 is a wasteful number, since it uses less digits than its factorization.

313212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186418 (or 186416 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 313212212 is about 17697.8024624528. The cubic root of 313212212 is about 679.1195438786.

Adding to 313212212 its reverse (212212313), we get a palindrome (525424525).

It can be divided in two parts, 31321 and 2212, that added together give a palindrome (33533).

The spelling of 313212212 in words is "three hundred thirteen million, two hundred twelve thousand, two hundred twelve".