320020311433 has 4 divisors (see below), whose sum is σ = 320025983508. Its totient is φ = 320014639360.

The previous prime is 320020311421. The next prime is 320020311463. The reversal of 320020311433 is 334113020023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334113020023 = 107 ⋅3122551589.

It can be written as a sum of positive squares in 2 ways, for example, as 94668828489 + 225351482944 = 307683^2 + 474712^2 .

It is a cyclic number.

It is not a de Polignac number, because 320020311433 - 2³⁷ = 182581357961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320020311463) 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 in 3 ways as a sum of consecutive naturals, for example, 2750548 + ... + 2864533.

It is an arithmetic number, because the mean of its divisors is an integer number (80006495877).

Almost surely, 2^320020311433 is an apocalyptic number.

It is an amenable number.

320020311433 is a deficient number, since it is larger than the sum of its proper divisors (5672075).

320020311433 is an equidigital number, since it uses as much as digits as its factorization.

320020311433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672074.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 320020311433 its reverse (334113020023), we get a palindrome (654133331456).

The spelling of 320020311433 in words is "three hundred twenty billion, twenty million, three hundred eleven thousand, four hundred thirty-three".