123315320345 has 8 divisors (see below), whose sum is σ = 169118153664. Its totient is φ = 84559076784.

The previous prime is 123315320339. The next prime is 123315320357. The reversal of 123315320345 is 543023513321.

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

It is not a de Polignac number, because 123315320345 - 2¹² = 123315316249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1761647399 + ... + 1761647468.

It is an arithmetic number, because the mean of its divisors is an integer number (21139769208).

Almost surely, 2^123315320345 is an apocalyptic number.

It is an amenable number.

123315320345 is a deficient number, since it is larger than the sum of its proper divisors (45802833319).

123315320345 is an equidigital number, since it uses as much as digits as its factorization.

123315320345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523294879.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 123315320345 its reverse (543023513321), we get a palindrome (666338833666).

The spelling of 123315320345 in words is "one hundred twenty-three billion, three hundred fifteen million, three hundred twenty thousand, three hundred forty-five".