123123312241 has 4 divisors (see below), whose sum is σ = 123376132672. Its totient is φ = 122870491812.

The previous prime is 123123312223. The next prime is 123123312287. The reversal of 123123312241 is 142213321321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142213321321 = 2389 ⋅59528389.

It is a cyclic number.

It is not a de Polignac number, because 123123312241 - 2⁷ = 123123312113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123123312841) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 126409485 + ... + 126410458.

It is an arithmetic number, because the mean of its divisors is an integer number (30844033168).

Almost surely, 2^123123312241 is an apocalyptic number.

It is an amenable number.

123123312241 is a deficient number, since it is larger than the sum of its proper divisors (252820431).

123123312241 is an equidigital number, since it uses as much as digits as its factorization.

123123312241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252820430.

The product of its digits is 1728, while the sum is 25.

Adding to 123123312241 its reverse (142213321321), we get a palindrome (265336633562).

The spelling of 123123312241 in words is "one hundred twenty-three billion, one hundred twenty-three million, three hundred twelve thousand, two hundred forty-one".