12305431267 has 2 divisors, whose sum is σ = 12305431268. Its totient is φ = 12305431266.

The previous prime is 12305431219. The next prime is 12305431277. The reversal of 12305431267 is 76213450321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12305431267 - 2²⁷ = 12171213539 is a prime.

It is a super-2 number, since 2×12305431267² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12305431277) 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 as a sum of consecutive naturals, namely, 6152715633 + 6152715634.

It is an arithmetic number, because the mean of its divisors is an integer number (6152715634).

Almost surely, 2^12305431267 is an apocalyptic number.

12305431267 is a deficient number, since it is larger than the sum of its proper divisors (1).

12305431267 is an equidigital number, since it uses as much as digits as its factorization.

12305431267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 12305431267 its reverse (76213450321), we get a palindrome (88518881588).

The spelling of 12305431267 in words is "twelve billion, three hundred five million, four hundred thirty-one thousand, two hundred sixty-seven".