212355440343 has 24 divisors (see below), whose sum is σ = 319099789008. Its totient is φ = 141123648384.

The previous prime is 212355440333. The next prime is 212355440357. The reversal of 212355440343 is 343044553212.

212355440343 is a `hidden beast` number, since 2 + 1 + 23 + 554 + 40 + 3 + 43 = 666.

It is not a de Polignac number, because 212355440343 - 2¹² = 212355436247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212355440298 and 212355440307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212355440333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1301346 + ... + 1455407.

It is an arithmetic number, because the mean of its divisors is an integer number (13295824542).

Almost surely, 2^212355440343 is an apocalyptic number.

212355440343 is a deficient number, since it is larger than the sum of its proper divisors (106744348665).

212355440343 is an equidigital number, since it uses as much as digits as its factorization.

212355440343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757085 (or 2757073 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 212355440343 its reverse (343044553212), we get a palindrome (555399993555).

The spelling of 212355440343 in words is "two hundred twelve billion, three hundred fifty-five million, four hundred forty thousand, three hundred forty-three".