1312343520123 has 8 divisors (see below), whose sum is σ = 1749812317200. Its totient is φ = 874885201568.

The previous prime is 1312343520097. The next prime is 1312343520197. The reversal of 1312343520123 is 3210253432131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312343520123 - 2¹⁰ = 1312343519099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312343520823) 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, 2322588 + ... + 2831801.

It is an arithmetic number, because the mean of its divisors is an integer number (218726539650).

Almost surely, 2^{1312343520123} is an apocalyptic number.

1312343520123 is a deficient number, since it is larger than the sum of its proper divisors (437468797077).

1312343520123 is an equidigital number, since it uses as much as digits as its factorization.

1312343520123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239261.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 1312343520123 its reverse (3210253432131), we get a palindrome (4522596952254).

The spelling of 1312343520123 in words is "one trillion, three hundred twelve billion, three hundred forty-three million, five hundred twenty thousand, one hundred twenty-three".