212008312 has 8 divisors (see below), whose sum is σ = 397515600. Its totient is φ = 106004152.

The previous prime is 212008297. The next prime is 212008373. The reversal of 212008312 is 213800212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 212008312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250512 + ... + 13250527.

It is an arithmetic number, because the mean of its divisors is an integer number (49689450).

Almost surely, 2^212008312 is an apocalyptic number.

It is an amenable number.

212008312 is a deficient number, since it is larger than the sum of its proper divisors (185507288).

212008312 is a wasteful number, since it uses less digits than its factorization.

212008312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26501045 (or 26501041 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 212008312 is about 14560.5052110152. The cubic root of 212008312 is about 596.2809884757.

Adding to 212008312 its reverse (213800212), we get a palindrome (425808524).

The spelling of 212008312 in words is "two hundred twelve million, eight thousand, three hundred twelve".