12340304231 has 4 divisors (see below), whose sum is σ = 12342373464. Its totient is φ = 12338235000.

The previous prime is 12340304173. The next prime is 12340304279. The reversal of 12340304231 is 13240304321.

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 12340304231 - 2²⁶ = 12273195367 is a prime.

It is a super-2 number, since 2×12340304231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12340304197 and 12340304206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340303231) by changing a digit.

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, 1025645 + ... + 1037606.

It is an arithmetic number, because the mean of its divisors is an integer number (3085593366).

Almost surely, 2^12340304231 is an apocalyptic number.

12340304231 is a deficient number, since it is larger than the sum of its proper divisors (2069233).

12340304231 is an equidigital number, since it uses as much as digits as its factorization.

12340304231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069232.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12340304231 its reverse (13240304321), we get a palindrome (25580608552).

The spelling of 12340304231 in words is "twelve billion, three hundred forty million, three hundred four thousand, two hundred thirty-one".