12305431263 has 32 divisors (see below), whose sum is σ = 17416224000. Its totient is φ = 7706589696.

The previous prime is 12305431219. The next prime is 12305431267. The reversal of 12305431263 is 36213450321.

It is not a de Polignac number, because 12305431263 - 2⁶ = 12305431199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12305431263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305431267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8296920 + ... + 8298402.

It is an arithmetic number, because the mean of its divisors is an integer number (544257000).

Almost surely, 2^12305431263 is an apocalyptic number.

12305431263 is a deficient number, since it is larger than the sum of its proper divisors (5110792737).

12305431263 is a wasteful number, since it uses less digits than its factorization.

12305431263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631.

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

Adding to 12305431263 its reverse (36213450321), we get a palindrome (48518881584).

The spelling of 12305431263 in words is "twelve billion, three hundred five million, four hundred thirty-one thousand, two hundred sixty-three".