12431440507 has 2 divisors, whose sum is σ = 12431440508. Its totient is φ = 12431440506.

The previous prime is 12431440477. The next prime is 12431440579. The reversal of 12431440507 is 70504413421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12431440507 - 2²³ = 12423051899 is a prime.

It is not a weakly prime, because it can be changed into another prime (12431440207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215720253 + 6215720254.

It is an arithmetic number, because the mean of its divisors is an integer number (6215720254).

Almost surely, 2^12431440507 is an apocalyptic number.

12431440507 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431440507 is an equidigital number, since it uses as much as digits as its factorization.

12431440507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 12431440507 its reverse (70504413421), we get a palindrome (82935853928).

The spelling of 12431440507 in words is "twelve billion, four hundred thirty-one million, four hundred forty thousand, five hundred seven".