320056660424531 has 2 divisors, whose sum is σ = 320056660424532. Its totient is φ = 320056660424530.

The previous prime is 320056660424513. The next prime is 320056660424551. The reversal of 320056660424531 is 135424066650023.

Together with previous prime (320056660424513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320056660424531 is a prime.

It is a super-2 number, since 2×320056660424531² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320056660424551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160028330212265 + 160028330212266.

It is an arithmetic number, because the mean of its divisors is an integer number (160028330212266).

Almost surely, 2^{320056660424531} is an apocalyptic number.

320056660424531 is a deficient number, since it is larger than the sum of its proper divisors (1).

320056660424531 is an equidigital number, since it uses as much as digits as its factorization.

320056660424531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 320056660424531 in words is "three hundred twenty trillion, fifty-six billion, six hundred sixty million, four hundred twenty-four thousand, five hundred thirty-one".