243121041312 has 96 divisors (see below), whose sum is σ = 640724116032. Its totient is φ = 80719294464.

The previous prime is 243121041299. The next prime is 243121041329. The reversal of 243121041312 is 213140121342.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71232118 + ... + 71235530.

It is an arithmetic number, because the mean of its divisors is an integer number (6674209542).

Almost surely, 2^243121041312 is an apocalyptic number.

It is an amenable number.

243121041312 is an abundant number, since it is smaller than the sum of its proper divisors (397603074720).

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

243121041312 is a wasteful number, since it uses less digits than its factorization.

243121041312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150 (or 6142 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 243121041312 its reverse (213140121342), we get a palindrome (456261162654).

The spelling of 243121041312 in words is "two hundred forty-three billion, one hundred twenty-one million, forty-one thousand, three hundred twelve".