243204324023 has 4 divisors (see below), whose sum is σ = 243207479928. Its totient is φ = 243201168120.

The previous prime is 243204323959. The next prime is 243204324037. The reversal of 243204324023 is 320423402342.

It is a happy number.

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 243204324023 - 2⁶ = 243204323959 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 (243204326023) 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, 1459388 + ... + 1617473.

It is an arithmetic number, because the mean of its divisors is an integer number (60801869982).

Almost surely, 2^243204324023 is an apocalyptic number.

243204324023 is a deficient number, since it is larger than the sum of its proper divisors (3155905).

243204324023 is an equidigital number, since it uses as much as digits as its factorization.

243204324023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155904.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 243204324023 its reverse (320423402342), we get a palindrome (563627726365).

The spelling of 243204324023 in words is "two hundred forty-three billion, two hundred four million, three hundred twenty-four thousand, twenty-three".