243123411040 has 96 divisors (see below), whose sum is σ = 611351483904. Its totient is φ = 91049410560.

The previous prime is 243123411017. The next prime is 243123411053. The reversal of 243123411040 is 40114321342.

It is a junction number, because it is equal to n+sod(n) for n = 243123410996 and 243123411014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285532 + ... + 753508.

It is an arithmetic number, because the mean of its divisors is an integer number (6368244624).

Almost surely, 2^243123411040 is an apocalyptic number.

243123411040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243123411040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305675741952).

243123411040 is an abundant number, since it is smaller than the sum of its proper divisors (368228072864).

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

243123411040 is a wasteful number, since it uses less digits than its factorization.

243123411040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468200 (or 468192 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 243123411040 its reverse (40114321342), we get a palindrome (283237732382).

The spelling of 243123411040 in words is "two hundred forty-three billion, one hundred twenty-three million, four hundred eleven thousand, forty".