320503104523 has 16 divisors (see below), whose sum is σ = 368862024960. Its totient is φ = 272791764000.

The previous prime is 320503104497. The next prime is 320503104527. The reversal of 320503104523 is 325401305023.

It is not a de Polignac number, because 320503104523 - 2²⁵ = 320469550091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320503104491 and 320503104500.

It is not an unprimeable number, because it can be changed into a prime (320503104527) 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 15 ways as a sum of consecutive naturals, for example, 695908 + ... + 1060798.

It is an arithmetic number, because the mean of its divisors is an integer number (23053876560).

Almost surely, 2^320503104523 is an apocalyptic number.

320503104523 is a deficient number, since it is larger than the sum of its proper divisors (48358920437).

320503104523 is a wasteful number, since it uses less digits than its factorization.

320503104523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365778.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 320503104523 its reverse (325401305023), we get a palindrome (645904409546).

The spelling of 320503104523 in words is "three hundred twenty billion, five hundred three million, one hundred four thousand, five hundred twenty-three".