320425433 has 2 divisors, whose sum is σ = 320425434. Its totient is φ = 320425432.

The previous prime is 320425411. The next prime is 320425451. The reversal of 320425433 is 334524023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319980544 + 444889 = 17888^2 + 667^2 .

It is an emirp because it is prime and its reverse (334524023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320425433 - 2¹⁰ = 320424409 is a prime.

It is a super-3 number, since 3×320425433³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (320425463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160212716 + 160212717.

It is an arithmetic number, because the mean of its divisors is an integer number (160212717).

Almost surely, 2^320425433 is an apocalyptic number.

It is an amenable number.

320425433 is a deficient number, since it is larger than the sum of its proper divisors (1).

320425433 is an equidigital number, since it uses as much as digits as its factorization.

320425433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 320425433 is about 17900.4310841946. The cubic root of 320425433 is about 684.2933611895.

Adding to 320425433 its reverse (334524023), we get a palindrome (654949456).

The spelling of 320425433 in words is "three hundred twenty million, four hundred twenty-five thousand, four hundred thirty-three".