312288212 has 12 divisors (see below), whose sum is σ = 550494420. Its totient is φ = 155004096.

The previous prime is 312288209. The next prime is 312288217. The reversal of 312288212 is 212882213.

It can be written as a sum of positive squares in 2 ways, for example, as 147525316 + 164762896 = 12146^2 + 12836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312288217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284387 + ... + 285482.

It is an arithmetic number, because the mean of its divisors is an integer number (45874535).

Almost surely, 2^312288212 is an apocalyptic number.

It is an amenable number.

312288212 is a deficient number, since it is larger than the sum of its proper divisors (238206208).

312288212 is a wasteful number, since it uses less digits than its factorization.

312288212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570010 (or 570008 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 312288212 is about 17671.6782451470. The cubic root of 312288212 is about 678.4510678829.

The spelling of 312288212 in words is "three hundred twelve million, two hundred eighty-eight thousand, two hundred twelve".