320510440623 has 4 divisors (see below), whose sum is σ = 427347254168. Its totient is φ = 213673627080.

The previous prime is 320510440603. The next prime is 320510440693. The reversal of 320510440623 is 326044015023.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 320510440623 - 2¹² = 320510436527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320510440603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53418406768 + ... + 53418406773.

It is an arithmetic number, because the mean of its divisors is an integer number (106836813542).

Almost surely, 2^320510440623 is an apocalyptic number.

320510440623 is a deficient number, since it is larger than the sum of its proper divisors (106836813545).

320510440623 is a wasteful number, since it uses less digits than its factorization.

320510440623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106836813544.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 320510440623 its reverse (326044015023), we get a palindrome (646554455646).

The spelling of 320510440623 in words is "three hundred twenty billion, five hundred ten million, four hundred forty thousand, six hundred twenty-three".