243443201320 has 32 divisors (see below), whose sum is σ = 597542404320. Its totient is φ = 88524800320.

The previous prime is 243443201317. The next prime is 243443201453. The reversal of 243443201320 is 23102344342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276639562 + ... + 276640441.

It is an arithmetic number, because the mean of its divisors is an integer number (18673200135).

Almost surely, 2^243443201320 is an apocalyptic number.

243443201320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243443201320 is an abundant number, since it is smaller than the sum of its proper divisors (354099203000).

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

243443201320 is a wasteful number, since it uses less digits than its factorization.

243443201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553280025 (or 553280021 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 243443201320 its reverse (23102344342), we get a palindrome (266545545662).

The spelling of 243443201320 in words is "two hundred forty-three billion, four hundred forty-three million, two hundred one thousand, three hundred twenty".