331568422469 has 2 divisors, whose sum is σ = 331568422470. Its totient is φ = 331568422468.

The previous prime is 331568422447. The next prime is 331568422541. The reversal of 331568422469 is 964224865133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310318071844 + 21250350625 = 557062^2 + 145775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331568422469 is a prime.

It is a super-2 number, since 2×331568422469² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331568422469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331568422439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165784211234 + 165784211235.

It is an arithmetic number, because the mean of its divisors is an integer number (165784211235).

Almost surely, 2^331568422469 is an apocalyptic number.

It is an amenable number.

331568422469 is a deficient number, since it is larger than the sum of its proper divisors (1).

331568422469 is an equidigital number, since it uses as much as digits as its factorization.

331568422469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 53.

The spelling of 331568422469 in words is "three hundred thirty-one billion, five hundred sixty-eight million, four hundred twenty-two thousand, four hundred sixty-nine".