123315254134243 has 8 divisors (see below), whose sum is σ = 123406782529536. Its totient is φ = 123223744425600.

The previous prime is 123315254134223. The next prime is 123315254134301. The reversal of 123315254134243 is 342431452513321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123315254134243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123315254134243.

It is not an unprimeable number, because it can be changed into a prime (123315254134213) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 8545323 + ... + 17878843.

It is an arithmetic number, because the mean of its divisors is an integer number (15425847816192).

Almost surely, 2^{123315254134243} is an apocalyptic number.

123315254134243 is a deficient number, since it is larger than the sum of its proper divisors (91528395293).

123315254134243 is an equidigital number, since it uses as much as digits as its factorization.

123315254134243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9343325.

The product of its digits is 1036800, while the sum is 43.

The spelling of 123315254134243 in words is "one hundred twenty-three trillion, three hundred fifteen billion, two hundred fifty-four million, one hundred thirty-four thousand, two hundred forty-three".