243123340330 has 128 divisors (see below), whose sum is σ = 494158371840. Its totient is φ = 85526461440.

The previous prime is 243123340289. The next prime is 243123340331. The reversal of 243123340330 is 33043321342.

It is a happy number.

It is a super-2 number, since 2×243123340330² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243123340331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70123257 + ... + 70126723.

It is an arithmetic number, because the mean of its divisors is an integer number (3860612280).

Almost surely, 2^243123340330 is an apocalyptic number.

243123340330 is an abundant number, since it is smaller than the sum of its proper divisors (251035031510).

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

243123340330 is a wasteful number, since it uses less digits than its factorization.

243123340330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 243123340330 its reverse (33043321342), we get a palindrome (276166661672).

The spelling of 243123340330 in words is "two hundred forty-three billion, one hundred twenty-three million, three hundred forty thousand, three hundred thirty".