243404312100 has 72 divisors (see below), whose sum is σ = 707272544160. Its totient is φ = 64629223680.

The previous prime is 243404312029. The next prime is 243404312113. The reversal of 243404312100 is 1213404342.

243404312100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1671190 + ... + 1810989.

It is an arithmetic number, because the mean of its divisors is an integer number (9823229780).

Almost surely, 2^243404312100 is an apocalyptic number.

243404312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243404312100 is an abundant number, since it is smaller than the sum of its proper divisors (463868232060).

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

243404312100 is a wasteful number, since it uses less digits than its factorization.

243404312100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482429 (or 3482422 counting only the distinct ones).

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

Adding to 243404312100 its reverse (1213404342), we get a palindrome (244617716442).

The spelling of 243404312100 in words is "two hundred forty-three billion, four hundred four million, three hundred twelve thousand, one hundred".