320235427481 has 4 divisors (see below), whose sum is σ = 326277605412. Its totient is φ = 314193249552.

The previous prime is 320235427453. The next prime is 320235427517. The reversal of 320235427481 is 184724532023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184724532023 = 9661 ⋅19120643.

It can be written as a sum of positive squares in 2 ways, for example, as 113838760000 + 206396667481 = 337400^2 + 454309^2 .

It is a cyclic number.

It is not a de Polignac number, because 320235427481 - 2¹⁸ = 320235165337 is a prime.

It is a super-2 number, since 2×320235427481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320235427441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3021088886 + ... + 3021088991.

It is an arithmetic number, because the mean of its divisors is an integer number (81569401353).

Almost surely, 2^320235427481 is an apocalyptic number.

It is an amenable number.

320235427481 is a deficient number, since it is larger than the sum of its proper divisors (6042177931).

320235427481 is an equidigital number, since it uses as much as digits as its factorization.

320235427481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042177930.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 320235427481 in words is "three hundred twenty billion, two hundred thirty-five million, four hundred twenty-seven thousand, four hundred eighty-one".