243313243140 has 48 divisors (see below), whose sum is σ = 743211362880. Its totient is φ = 58985028480.

The previous prime is 243313243139. The next prime is 243313243141. The reversal of 243313243140 is 41342313342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243313243139) and next prime (243313243141).

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 = 243313243098 and 243313243107.

It is not an unprimeable number, because it can be changed into a prime (243313243141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184327555 + ... + 184328874.

It is an arithmetic number, because the mean of its divisors is an integer number (15483570060).

Almost surely, 2^243313243140 is an apocalyptic number.

243313243140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243313243140 is an abundant number, since it is smaller than the sum of its proper divisors (499898119740).

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

243313243140 is a wasteful number, since it uses less digits than its factorization.

243313243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368656452 (or 368656450 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 243313243140 its reverse (41342313342), we get a palindrome (284655556482).

The spelling of 243313243140 in words is "two hundred forty-three billion, three hundred thirteen million, two hundred forty-three thousand, one hundred forty".