212531312 has 20 divisors (see below), whose sum is σ = 470605296. Its totient is φ = 91084800.

The previous prime is 212531311. The next prime is 212531351. The reversal of 212531312 is 213135212.

212531312 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212531311) 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, 948689 + ... + 948912.

Almost surely, 2^212531312 is an apocalyptic number.

It is an amenable number.

212531312 is an abundant number, since it is smaller than the sum of its proper divisors (258073984).

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

212531312 is a wasteful number, since it uses less digits than its factorization.

212531312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897616 (or 1897610 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 212531312 is about 14578.4536902924. The cubic root of 212531312 is about 596.7709045992.

Adding to 212531312 its reverse (213135212), we get a palindrome (425666524).

The spelling of 212531312 in words is "two hundred twelve million, five hundred thirty-one thousand, three hundred twelve".