215223205343 has 4 divisors (see below), whose sum is σ = 215260857240. Its totient is φ = 215185553448.

The previous prime is 215223205339. The next prime is 215223205357. The reversal of 215223205343 is 343502322512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215223205343 - 2² = 215223205339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215223205363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18817373 + ... + 18828806.

It is an arithmetic number, because the mean of its divisors is an integer number (53815214310).

Almost surely, 2^215223205343 is an apocalyptic number.

215223205343 is a deficient number, since it is larger than the sum of its proper divisors (37651897).

215223205343 is an equidigital number, since it uses as much as digits as its factorization.

215223205343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37651896.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 215223205343 its reverse (343502322512), we get a palindrome (558725527855).

The spelling of 215223205343 in words is "two hundred fifteen billion, two hundred twenty-three million, two hundred five thousand, three hundred forty-three".