312302212 has 12 divisors (see below), whose sum is σ = 550197900. Its totient is φ = 155102816.

The previous prime is 312302203. The next prime is 312302219. The reversal of 312302212 is 212203213.

It can be written as a sum of positive squares in 2 ways, for example, as 147282496 + 165019716 = 12136^2 + 12846^2 .

It is not an unprimeable number, because it can be changed into a prime (312302219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261403 + ... + 262594.

It is an arithmetic number, because the mean of its divisors is an integer number (45849825).

Almost surely, 2^312302212 is an apocalyptic number.

It is an amenable number.

312302212 is a deficient number, since it is larger than the sum of its proper divisors (237895688).

312302212 is a wasteful number, since it uses less digits than its factorization.

312302212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524150 (or 524148 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312302212 is about 17672.0743547553. The cubic root of 312302212 is about 678.4612061384.

Adding to 312302212 its reverse (212203213), we get a palindrome (524505425).

The spelling of 312302212 in words is "three hundred twelve million, three hundred two thousand, two hundred twelve".