431383643569 has 2 divisors, whose sum is σ = 431383643570. Its totient is φ = 431383643568.

The previous prime is 431383643527. The next prime is 431383643609. The reversal of 431383643569 is 965346383134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226826445169 + 204557198400 = 476263^2 + 452280^2 .

It is a cyclic number.

It is not a de Polignac number, because 431383643569 - 2⁷ = 431383643441 is a prime.

It is a super-2 number, since 2×431383643569² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (431383643069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215691821784 + 215691821785.

It is an arithmetic number, because the mean of its divisors is an integer number (215691821785).

Almost surely, 2^431383643569 is an apocalyptic number.

It is an amenable number.

431383643569 is a deficient number, since it is larger than the sum of its proper divisors (1).

431383643569 is an equidigital number, since it uses as much as digits as its factorization.

431383643569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16796160, while the sum is 55.

The spelling of 431383643569 in words is "four hundred thirty-one billion, three hundred eighty-three million, six hundred forty-three thousand, five hundred sixty-nine".