431717681249 has 2 divisors, whose sum is σ = 431717681250. Its totient is φ = 431717681248.

The previous prime is 431717681233. The next prime is 431717681273. The reversal of 431717681249 is 942186717134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414607210000 + 17110471249 = 643900^2 + 130807^2 .

It is a cyclic number.

It is not a de Polignac number, because 431717681249 - 2⁴ = 431717681233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 431717681249.

It is not a weakly prime, because it can be changed into another prime (431717681209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215858840624 + 215858840625.

It is an arithmetic number, because the mean of its divisors is an integer number (215858840625).

Almost surely, 2^431717681249 is an apocalyptic number.

It is an amenable number.

431717681249 is a deficient number, since it is larger than the sum of its proper divisors (1).

431717681249 is an equidigital number, since it uses as much as digits as its factorization.

431717681249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The spelling of 431717681249 in words is "four hundred thirty-one billion, seven hundred seventeen million, six hundred eighty-one thousand, two hundred forty-nine".