213243324023 has 4 divisors (see below), whose sum is σ = 213800095488. Its totient is φ = 212686552560.

The previous prime is 213243324013. The next prime is 213243324037. The reversal of 213243324023 is 320423342312.

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 213243324023 - 2²⁴ = 213226546807 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 (213243324013) 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, 278385158 + ... + 278385923.

It is an arithmetic number, because the mean of its divisors is an integer number (53450023872).

Almost surely, 2^213243324023 is an apocalyptic number.

213243324023 is a deficient number, since it is larger than the sum of its proper divisors (556771465).

213243324023 is an equidigital number, since it uses as much as digits as its factorization.

213243324023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556771464.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 213243324023 its reverse (320423342312), we get a palindrome (533666666335).

The spelling of 213243324023 in words is "two hundred thirteen billion, two hundred forty-three million, three hundred twenty-four thousand, twenty-three".