243120353340 has 96 divisors (see below), whose sum is σ = 711048199680. Its totient is φ = 61988726016.

The previous prime is 243120353297. The next prime is 243120353353. The reversal of 243120353340 is 43353021342.

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 = 243120353298 and 243120353307.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 499054 + ... + 857493.

It is an arithmetic number, because the mean of its divisors is an integer number (7406752080).

Almost surely, 2^243120353340 is an apocalyptic number.

243120353340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243120353340 is an abundant number, since it is smaller than the sum of its proper divisors (467927846340).

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

243120353340 is a wasteful number, since it uses less digits than its factorization.

243120353340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356691 (or 1356689 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 243120353340 its reverse (43353021342), we get a palindrome (286473374682).

The spelling of 243120353340 in words is "two hundred forty-three billion, one hundred twenty million, three hundred fifty-three thousand, three hundred forty".