12431514217 has 2 divisors, whose sum is σ = 12431514218. Its totient is φ = 12431514216.

The previous prime is 12431514211. The next prime is 12431514233. The reversal of 12431514217 is 71241513421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9957844521 + 2473669696 = 99789^2 + 49736^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431514217 - 2³ = 12431514209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12431514211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215757108 + 6215757109.

It is an arithmetic number, because the mean of its divisors is an integer number (6215757109).

Almost surely, 2^12431514217 is an apocalyptic number.

It is an amenable number.

12431514217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431514217 is an equidigital number, since it uses as much as digits as its factorization.

12431514217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The spelling of 12431514217 in words is "twelve billion, four hundred thirty-one million, five hundred fourteen thousand, two hundred seventeen".