320532352403 has 4 divisors (see below), whose sum is σ = 339387196680. Its totient is φ = 301677508128.

The previous prime is 320532352391. The next prime is 320532352417. The reversal of 320532352403 is 304253235023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304253235023 = 17 ⋅17897249119.

It is a cyclic number.

It is not a de Polignac number, because 320532352403 - 2¹⁰ = 320532351379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320532352403.

It is not an unprimeable number, because it can be changed into a prime (320532352423) 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, 9427422113 + ... + 9427422146.

It is an arithmetic number, because the mean of its divisors is an integer number (84846799170).

Almost surely, 2^320532352403 is an apocalyptic number.

320532352403 is a deficient number, since it is larger than the sum of its proper divisors (18854844277).

320532352403 is a wasteful number, since it uses less digits than its factorization.

320532352403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18854844276.

The product of its (nonzero) digits is 64800, while the sum is 32.

Adding to 320532352403 its reverse (304253235023), we get a palindrome (624785587426).

The spelling of 320532352403 in words is "three hundred twenty billion, five hundred thirty-two million, three hundred fifty-two thousand, four hundred three".