243421321330 has 32 divisors (see below), whose sum is σ = 498773179008. Its totient is φ = 84668284800.

The previous prime is 243421321327. The next prime is 243421321361. The reversal of 243421321330 is 33123124342.

It is a happy number.

It is a super-2 number, since 2×243421321330² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48104451 + ... + 48109510.

It is an arithmetic number, because the mean of its divisors is an integer number (15586661844).

Almost surely, 2^243421321330 is an apocalyptic number.

243421321330 is an abundant number, since it is smaller than the sum of its proper divisors (255351857678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243421321330 is a wasteful number, since it uses less digits than its factorization.

243421321330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96214002.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 243421321330 its reverse (33123124342), we get a palindrome (276544445672).

The spelling of 243421321330 in words is "two hundred forty-three billion, four hundred twenty-one million, three hundred twenty-one thousand, three hundred thirty".