213443404243 has 8 divisors (see below), whose sum is σ = 214357631040. Its totient is φ = 212529354240.

The previous prime is 213443404231. The next prime is 213443404247. The reversal of 213443404243 is 342404344312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213443404243 - 2²¹ = 213441307091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213443404199 and 213443404208.

It is not an unprimeable number, because it can be changed into a prime (213443404247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2752563 + ... + 2829043.

It is an arithmetic number, because the mean of its divisors is an integer number (26794703880).

Almost surely, 2^213443404243 is an apocalyptic number.

213443404243 is a deficient number, since it is larger than the sum of its proper divisors (914226797).

213443404243 is a wasteful number, since it uses less digits than its factorization.

213443404243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88397.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 213443404243 its reverse (342404344312), we get a palindrome (555847748555).

The spelling of 213443404243 in words is "two hundred thirteen billion, four hundred forty-three million, four hundred four thousand, two hundred forty-three".