43213144243 has 4 divisors (see below), whose sum is σ = 43310691288. Its totient is φ = 43115597200.

The previous prime is 43213144241. The next prime is 43213144259. The reversal of 43213144243 is 34244131234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34244131234 = 2 ⋅17122065617.

It is a cyclic number.

It is not a de Polignac number, because 43213144243 - 2¹ = 43213144241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43213144241) 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, 48772858 + ... + 48773743.

It is an arithmetic number, because the mean of its divisors is an integer number (10827672822).

Almost surely, 2^43213144243 is an apocalyptic number.

43213144243 is a deficient number, since it is larger than the sum of its proper divisors (97547045).

43213144243 is an equidigital number, since it uses as much as digits as its factorization.

43213144243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97547044.

The product of its digits is 27648, while the sum is 31.

Adding to 43213144243 its reverse (34244131234), we get a palindrome (77457275477).

The spelling of 43213144243 in words is "forty-three billion, two hundred thirteen million, one hundred forty-four thousand, two hundred forty-three".