243140245320 has 256 divisors, whose sum is σ = 861729914880. Its totient is φ = 53706240000.

The previous prime is 243140245319. The next prime is 243140245343. The reversal of 243140245320 is 23542041342.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19549824 + ... + 19562256.

It is an arithmetic number, because the mean of its divisors is an integer number (3366132480).

Almost surely, 2^243140245320 is an apocalyptic number.

243140245320 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 243140245320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430864957440).

243140245320 is an abundant number, since it is smaller than the sum of its proper divisors (618589669560).

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

243140245320 is a wasteful number, since it uses less digits than its factorization.

243140245320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13236 (or 13232 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 243140245320 its reverse (23542041342), we get a palindrome (266682286662).

The spelling of 243140245320 in words is "two hundred forty-three billion, one hundred forty million, two hundred forty-five thousand, three hundred twenty".