212311030323 has 16 divisors (see below), whose sum is σ = 323528025600. Its totient is φ = 121318167936.

The previous prime is 212311030279. The next prime is 212311030361. The reversal of 212311030323 is 323030113212.

It is not a de Polignac number, because 212311030323 - 2⁶ = 212311030259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 212311030323.

It is not an unprimeable number, because it can be changed into a prime (212311030823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1895386 + ... + 2004272.

It is an arithmetic number, because the mean of its divisors is an integer number (20220501600).

Almost surely, 2^212311030323 is an apocalyptic number.

212311030323 is a deficient number, since it is larger than the sum of its proper divisors (111216995277).

212311030323 is a wasteful number, since it uses less digits than its factorization.

212311030323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201746.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 212311030323 its reverse (323030113212), we get a palindrome (535341143535).

The spelling of 212311030323 in words is "two hundred twelve billion, three hundred eleven million, thirty thousand, three hundred twenty-three".