123123315103342 has 4 divisors (see below), whose sum is σ = 184684972655016. Its totient is φ = 61561657551670.

The previous prime is 123123315103319. The next prime is 123123315103343. The reversal of 123123315103342 is 243301513321321.

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

It is a junction number, because it is equal to n+sod(n) for n = 123123315103298 and 123123315103307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123123315103343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30780828775834 + ... + 30780828775837.

It is an arithmetic number, because the mean of its divisors is an integer number (46171243163754).

Almost surely, 2^{123123315103342} is an apocalyptic number.

123123315103342 is a deficient number, since it is larger than the sum of its proper divisors (61561657551674).

123123315103342 is an equidigital number, since it uses as much as digits as its factorization.

123123315103342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61561657551673.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 123123315103342 its reverse (243301513321321), we get a palindrome (366424828424663).

The spelling of 123123315103342 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, three hundred fifteen million, one hundred three thousand, three hundred forty-two".