212329816 has 32 divisors (see below), whose sum is σ = 410004000. Its totient is φ = 103023360.

The previous prime is 212329811. The next prime is 212329841. The reversal of 212329816 is 618923212.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212329811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63646 + ... + 66898.

It is an arithmetic number, because the mean of its divisors is an integer number (12812625).

Almost surely, 2^212329816 is an apocalyptic number.

It is an amenable number.

212329816 is a deficient number, since it is larger than the sum of its proper divisors (197674184).

212329816 is a wasteful number, since it uses less digits than its factorization.

212329816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3499 (or 3495 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 212329816 is about 14571.5413048860. The cubic root of 212329816 is about 596.5822500896.

The spelling of 212329816 in words is "two hundred twelve million, three hundred twenty-nine thousand, eight hundred sixteen".