123130303243 has 4 divisors (see below), whose sum is σ = 123131299480. Its totient is φ = 123129307008.

The previous prime is 123130303183. The next prime is 123130303267. The reversal of 123130303243 is 342303031321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 342303031321 = 5531 ⋅61888091.

It is a cyclic number.

It is not a de Polignac number, because 123130303243 - 2¹³ = 123130295051 is a prime.

It is a super-2 number, since 2×123130303243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123130303273) 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, 281253 + ... + 570406.

It is an arithmetic number, because the mean of its divisors is an integer number (30782824870).

Almost surely, 2^123130303243 is an apocalyptic number.

123130303243 is a deficient number, since it is larger than the sum of its proper divisors (996237).

123130303243 is an equidigital number, since it uses as much as digits as its factorization.

123130303243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996236.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 123130303243 its reverse (342303031321), we get a palindrome (465433334564).

The spelling of 123130303243 in words is "one hundred twenty-three billion, one hundred thirty million, three hundred three thousand, two hundred forty-three".