212930 has 16 divisors (see below), whose sum is σ = 388800. Its totient is φ = 83952.

The previous prime is 212923. The next prime is 212969. The reversal of 212930 is 39212.

212930 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212899 and 212908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 1169.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2²¹²⁹³⁰ is an apocalyptic number.

212930 is a deficient number, since it is larger than the sum of its proper divisors (175870).

212930 is a wasteful number, since it uses less digits than its factorization.

212930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 212930 is about 461.4433876436. The cubic root of 212930 is about 59.7143832830.

The spelling of 212930 in words is "two hundred twelve thousand, nine hundred thirty".