243121004304 has 40 divisors (see below), whose sum is σ = 655369666752. Its totient is φ = 77516841600.

The previous prime is 243121004297. The next prime is 243121004383. The reversal of 243121004304 is 403400121342.

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 7 ways as a sum of consecutive naturals, for example, 110108047 + ... + 110110254.

Almost surely, 2^243121004304 is an apocalyptic number.

243121004304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243121004304 is an abundant number, since it is smaller than the sum of its proper divisors (412248662448).

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

243121004304 is a wasteful number, since it uses less digits than its factorization.

243121004304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220218335 (or 220218329 counting only the distinct ones).

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

Adding to 243121004304 its reverse (403400121342), we get a palindrome (646521125646).

The spelling of 243121004304 in words is "two hundred forty-three billion, one hundred twenty-one million, four thousand, three hundred four".