212830723 has 16 divisors (see below), whose sum is σ = 257368320. Its totient is φ = 171926496.

The previous prime is 212830721. The next prime is 212830741. The reversal of 212830723 is 327038212.

It is not a de Polignac number, because 212830723 - 2¹ = 212830721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212830691 and 212830700.

It is not an unprimeable number, because it can be changed into a prime (212830721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22140 + ... + 30262.

It is an arithmetic number, because the mean of its divisors is an integer number (16085520).

Almost surely, 2^212830723 is an apocalyptic number.

212830723 is a deficient number, since it is larger than the sum of its proper divisors (44537597).

212830723 is a wasteful number, since it uses less digits than its factorization.

212830723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8346.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 212830723 is about 14588.7190321837. The cubic root of 212830723 is about 597.0510138062.

Adding to 212830723 its reverse (327038212), we get a palindrome (539868935).

The spelling of 212830723 in words is "two hundred twelve million, eight hundred thirty thousand, seven hundred twenty-three".