12431421337 has 2 divisors, whose sum is σ = 12431421338. Its totient is φ = 12431421336.

The previous prime is 12431421293. The next prime is 12431421361. The reversal of 12431421337 is 73312413421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8960326281 + 3471095056 = 94659^2 + 58916^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431421337 - 2²⁷ = 12297203609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12431421299 and 12431421308.

It is not a weakly prime, because it can be changed into another prime (12431421437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215710668 + 6215710669.

It is an arithmetic number, because the mean of its divisors is an integer number (6215710669).

Almost surely, 2^12431421337 is an apocalyptic number.

It is an amenable number.

12431421337 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431421337 is an equidigital number, since it uses as much as digits as its factorization.

12431421337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

Adding to 12431421337 its reverse (73312413421), we get a palindrome (85743834758).

The spelling of 12431421337 in words is "twelve billion, four hundred thirty-one million, four hundred twenty-one thousand, three hundred thirty-seven".