212630312 has 32 divisors (see below), whose sum is σ = 405491880. Its totient is φ = 104509440.

The previous prime is 212630309. The next prime is 212630359. The reversal of 212630312 is 213036212.

It is a happy number.

212630312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 163993636 + 48636676 = 12806^2 + 6974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315608 + ... + 316280.

Almost surely, 2^212630312 is an apocalyptic number.

It is an amenable number.

212630312 is a deficient number, since it is larger than the sum of its proper divisors (192861568).

212630312 is a wasteful number, since it uses less digits than its factorization.

212630312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 212630312 is about 14581.8487168123. The cubic root of 212630312 is about 596.8635515727.

Adding to 212630312 its reverse (213036212), we get a palindrome (425666524).

The spelling of 212630312 in words is "two hundred twelve million, six hundred thirty thousand, three hundred twelve".