212323440344 has 64 divisors (see below), whose sum is σ = 424296273600. Its totient is φ = 99384569856.

The previous prime is 212323440311. The next prime is 212323440379. The reversal of 212323440344 is 443044323212.

It is a self number, because there is not a number n which added to its sum of digits gives 212323440344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3961952 + ... + 4015184.

It is an arithmetic number, because the mean of its divisors is an integer number (6629629275).

Almost surely, 2^212323440344 is an apocalyptic number.

It is an amenable number.

212323440344 is a deficient number, since it is larger than the sum of its proper divisors (211972833256).

212323440344 is a wasteful number, since it uses less digits than its factorization.

212323440344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53724 (or 53720 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 212323440344 its reverse (443044323212), we get a palindrome (655367763556).

The spelling of 212323440344 in words is "two hundred twelve billion, three hundred twenty-three million, four hundred forty thousand, three hundred forty-four".