12431128393 has 2 divisors, whose sum is σ = 12431128394. Its totient is φ = 12431128392.

The previous prime is 12431128363. The next prime is 12431128447. The reversal of 12431128393 is 39382113421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10660149504 + 1770978889 = 103248^2 + 42083^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431128393 - 2⁵ = 12431128361 is a prime.

It is not a weakly prime, because it can be changed into another prime (12431128363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215564196 + 6215564197.

It is an arithmetic number, because the mean of its divisors is an integer number (6215564197).

Almost surely, 2^12431128393 is an apocalyptic number.

It is an amenable number.

12431128393 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431128393 is an equidigital number, since it uses as much as digits as its factorization.

12431128393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The spelling of 12431128393 in words is "twelve billion, four hundred thirty-one million, one hundred twenty-eight thousand, three hundred ninety-three".