212310312 has 16 divisors (see below), whose sum is σ = 530775840. Its totient is φ = 70770096.

The previous prime is 212310283. The next prime is 212310347. The reversal of 212310312 is 213013212.

It is a junction number, because it is equal to n+sod(n) for n = 212310291 and 212310300.

It is an unprimeable number.

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, 4423108 + ... + 4423155.

It is an arithmetic number, because the mean of its divisors is an integer number (33173490).

Almost surely, 2^212310312 is an apocalyptic number.

It is an amenable number.

212310312 is an abundant number, since it is smaller than the sum of its proper divisors (318465528).

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

212310312 is a wasteful number, since it uses less digits than its factorization.

212310312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846272 (or 8846268 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 212310312 is about 14570.8720397923. The cubic root of 212310312 is about 596.5639827595.

Adding to 212310312 its reverse (213013212), we get a palindrome (425323524).

The spelling of 212310312 in words is "two hundred twelve million, three hundred ten thousand, three hundred twelve".