243123513102 has 24 divisors (see below), whose sum is σ = 526902246936. Its totient is φ = 81020457936.

The previous prime is 243123513097. The next prime is 243123513131. The reversal of 243123513102 is 201315321342.

243123513102 is a `hidden beast` number, since 2 + 4 + 312 + 35 + 1 + 310 + 2 = 666.

243123513102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1653628 + ... + 1794639.

It is an arithmetic number, because the mean of its divisors is an integer number (21954260289).

Almost surely, 2^243123513102 is an apocalyptic number.

243123513102 is an abundant number, since it is smaller than the sum of its proper divisors (283778733834).

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

243123513102 is a wasteful number, since it uses less digits than its factorization.

243123513102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452192 (or 3452189 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 243123513102 its reverse (201315321342), we get a palindrome (444438834444).

The spelling of 243123513102 in words is "two hundred forty-three billion, one hundred twenty-three million, five hundred thirteen thousand, one hundred two".