12340402315 has 4 divisors (see below), whose sum is σ = 14808482784. Its totient is φ = 9872321848.

The previous prime is 12340402307. The next prime is 12340402339. The reversal of 12340402315 is 51320404321.

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

It is a cyclic number.

It is not a de Polignac number, because 12340402315 - 2³ = 12340402307 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 12340402315.

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 3 ways as a sum of consecutive naturals, for example, 1234040227 + ... + 1234040236.

It is an arithmetic number, because the mean of its divisors is an integer number (3702120696).

Almost surely, 2^12340402315 is an apocalyptic number.

12340402315 is a deficient number, since it is larger than the sum of its proper divisors (2468080469).

12340402315 is an equidigital number, since it uses as much as digits as its factorization.

12340402315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468080468.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 12340402315 its reverse (51320404321), we get a palindrome (63660806636).

The spelling of 12340402315 in words is "twelve billion, three hundred forty million, four hundred two thousand, three hundred fifteen".