243331311102 has 128 divisors (see below), whose sum is σ = 541458432000. Its totient is φ = 72289680000.

The previous prime is 243331311101. The next prime is 243331311127. The reversal of 243331311102 is 201113133342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243331311101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 487637649 + ... + 487638147.

It is an arithmetic number, because the mean of its divisors is an integer number (4230144000).

Almost surely, 2^243331311102 is an apocalyptic number.

243331311102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 243331311102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270729216000).

243331311102 is an abundant number, since it is smaller than the sum of its proper divisors (298127120898).

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

243331311102 is a wasteful number, since it uses less digits than its factorization.

243331311102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 243331311102 its reverse (201113133342), we get a palindrome (444444444444).

The spelling of 243331311102 in words is "two hundred forty-three billion, three hundred thirty-one million, three hundred eleven thousand, one hundred two".