243312163140 has 48 divisors (see below), whose sum is σ = 681357620160. Its totient is φ = 64875285120.

The previous prime is 243312163117. The next prime is 243312163151. The reversal of 243312163140 is 41361213342.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 243312163098 and 243312163107.

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, 252906 + ... + 742014.

It is an arithmetic number, because the mean of its divisors is an integer number (14194950420).

Almost surely, 2^243312163140 is an apocalyptic number.

243312163140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243312163140 is an abundant number, since it is smaller than the sum of its proper divisors (438045457020).

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

243312163140 is a wasteful number, since it uses less digits than its factorization.

243312163140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497412 (or 497410 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 243312163140 its reverse (41361213342), we get a palindrome (284673376482).

The spelling of 243312163140 in words is "two hundred forty-three billion, three hundred twelve million, one hundred sixty-three thousand, one hundred forty".