243130330103 has 4 divisors (see below), whose sum is σ = 243132876168. Its totient is φ = 243127784040.

The previous prime is 243130330049. The next prime is 243130330151. The reversal of 243130330103 is 301033031342.

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

It is a cyclic number.

It is not a de Polignac number, because 243130330103 - 2⁶ = 243130330039 is a prime.

It is a super-2 number, since 2×243130330103² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243130330403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123976 + ... + 1322717.

It is an arithmetic number, because the mean of its divisors is an integer number (60783219042).

Almost surely, 2^243130330103 is an apocalyptic number.

243130330103 is a deficient number, since it is larger than the sum of its proper divisors (2546065).

243130330103 is an equidigital number, since it uses as much as digits as its factorization.

243130330103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546064.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 243130330103 its reverse (301033031342), we get a palindrome (544163361445).

The spelling of 243130330103 in words is "two hundred forty-three billion, one hundred thirty million, three hundred thirty thousand, one hundred three".