243111352140 has 36 divisors (see below), whose sum is σ = 737437768704. Its totient is φ = 64829693856.

The previous prime is 243111352123. The next prime is 243111352151. The reversal of 243111352140 is 41253111342.

243111352140 is a `hidden beast` number, since 2 + 4 + 311 + 135 + 214 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675309132 + ... + 675309491.

It is an arithmetic number, because the mean of its divisors is an integer number (20484382464).

Almost surely, 2^243111352140 is an apocalyptic number.

243111352140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243111352140 is an abundant number, since it is smaller than the sum of its proper divisors (494326416564).

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

243111352140 is a wasteful number, since it uses less digits than its factorization.

243111352140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350618638 (or 1350618633 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 243111352140 its reverse (41253111342), we get a palindrome (284364463482).

The spelling of 243111352140 in words is "two hundred forty-three billion, one hundred eleven million, three hundred fifty-two thousand, one hundred forty".