243223012140 has 96 divisors (see below), whose sum is σ = 682622277120. Its totient is φ = 64707494400.

The previous prime is 243223012091. The next prime is 243223012147. The reversal of 243223012140 is 41210322342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243223012140.

It is not an unprimeable number, because it can be changed into a prime (243223012147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57483825 + ... + 57488055.

It is an arithmetic number, because the mean of its divisors is an integer number (7110648720).

Almost surely, 2^243223012140 is an apocalyptic number.

243223012140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243223012140 is an abundant number, since it is smaller than the sum of its proper divisors (439399264980).

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

243223012140 is a wasteful number, since it uses less digits than its factorization.

243223012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263 (or 6261 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 243223012140 its reverse (41210322342), we get a palindrome (284433334482).

The spelling of 243223012140 in words is "two hundred forty-three billion, two hundred twenty-three million, twelve thousand, one hundred forty".