212331016 has 16 divisors (see below), whose sum is σ = 398282940. Its totient is φ = 106122240.

The previous prime is 212330999. The next prime is 212331089. The reversal of 212331016 is 610133212.

It can be written as a sum of positive squares in 2 ways, for example, as 186868900 + 25462116 = 13670^2 + 5046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212330984 and 212331002.

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, 26560 + ... + 33616.

Almost surely, 2^212331016 is an apocalyptic number.

It is an amenable number.

212331016 is a deficient number, since it is larger than the sum of its proper divisors (185951924).

212331016 is a wasteful number, since it uses less digits than its factorization.

212331016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10824 (or 10820 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 212331016 is about 14571.5824809799. The cubic root of 212331016 is about 596.5833739659.

Adding to 212331016 its reverse (610133212), we get a palindrome (822464228).

The spelling of 212331016 in words is "two hundred twelve million, three hundred thirty-one thousand, sixteen".