212315236 has 18 divisors (see below), whose sum is σ = 432213558. Its totient is φ = 90992160.

The previous prime is 212315219. The next prime is 212315251. The reversal of 212315236 is 632513212.

212315236 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 only one way, i.e., 164096100 + 48219136 = 12810^2 + 6944^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212315236.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541425 + ... + 541816.

Almost surely, 2^212315236 is an apocalyptic number.

It is an amenable number.

212315236 is an abundant number, since it is smaller than the sum of its proper divisors (219898322).

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

212315236 is a wasteful number, since it uses less digits than its factorization.

212315236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083259 (or 1083250 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 212315236 is about 14571.0410060503. The cubic root of 212315236 is about 596.5685946541.

Adding to 212315236 its reverse (632513212), we get a palindrome (844828448).

The spelling of 212315236 in words is "two hundred twelve million, three hundred fifteen thousand, two hundred thirty-six".