243130105102 has 4 divisors (see below), whose sum is σ = 364695157656. Its totient is φ = 121565052550.

The previous prime is 243130105081. The next prime is 243130105123. The reversal of 243130105102 is 201501031342.

It is a happy number.

243130105102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (243130105081) and next prime (243130105123).

It is a super-2 number, since 2×243130105102² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 60782526274 + ... + 60782526277.

It is an arithmetic number, because the mean of its divisors is an integer number (91173789414).

Almost surely, 2^243130105102 is an apocalyptic number.

243130105102 is a deficient number, since it is larger than the sum of its proper divisors (121565052554).

243130105102 is a wasteful number, since it uses less digits than its factorization.

243130105102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121565052553.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 243130105102 its reverse (201501031342), we get a palindrome (444631136444).

The spelling of 243130105102 in words is "two hundred forty-three billion, one hundred thirty million, one hundred five thousand, one hundred two".