243323012340 has 48 divisors (see below), whose sum is σ = 757004928960. Its totient is φ = 64886136480.

The previous prime is 243323012333. The next prime is 243323012357. The reversal of 243323012340 is 43210323342.

243323012340 is a `hidden beast` number, since 2 + 4 + 332 + 301 + 23 + 4 + 0 = 666.

243323012340 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225298546 + ... + 225299625.

It is an arithmetic number, because the mean of its divisors is an integer number (15770936020).

Almost surely, 2^243323012340 is an apocalyptic number.

243323012340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243323012340 is an abundant number, since it is smaller than the sum of its proper divisors (513681916620).

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

243323012340 is a wasteful number, since it uses less digits than its factorization.

243323012340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450598189 (or 450598181 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 243323012340 its reverse (43210323342), we get a palindrome (286533335682).

The spelling of 243323012340 in words is "two hundred forty-three billion, three hundred twenty-three million, twelve thousand, three hundred forty".