213423333203443 has 4 divisors (see below), whose sum is σ = 232825454403768. Its totient is φ = 194021212003120.

The previous prime is 213423333203401. The next prime is 213423333203449. The reversal of 213423333203443 is 344302333324312.

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 213423333203443 - 2⁴⁵ = 178238961114611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213423333203396 and 213423333203405.

It is not an unprimeable number, because it can be changed into a prime (213423333203449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9701060600146 + ... + 9701060600167.

It is an arithmetic number, because the mean of its divisors is an integer number (58206363600942).

Almost surely, 2^{213423333203443} is an apocalyptic number.

213423333203443 is a deficient number, since it is larger than the sum of its proper divisors (19402121200325).

213423333203443 is a wasteful number, since it uses less digits than its factorization.

213423333203443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19402121200324.

The product of its (nonzero) digits is 1119744, while the sum is 40.

Adding to 213423333203443 its reverse (344302333324312), we get a palindrome (557725666527755).

The spelling of 213423333203443 in words is "two hundred thirteen trillion, four hundred twenty-three billion, three hundred thirty-three million, two hundred three thousand, four hundred forty-three".