320500623 has 16 divisors (see below), whose sum is σ = 440117216. Its totient is φ = 207308160.

The previous prime is 320500591. The next prime is 320500627. The reversal of 320500623 is 326005023.

It is not a de Polignac number, because 320500623 - 2⁵ = 320500591 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 320500623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320500627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37533 + ... + 45273.

It is an arithmetic number, because the mean of its divisors is an integer number (27507326).

Almost surely, 2^320500623 is an apocalyptic number.

320500623 is a deficient number, since it is larger than the sum of its proper divisors (119616593).

320500623 is a wasteful number, since it uses less digits than its factorization.

320500623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 320500623 is about 17902.5311897508. The cubic root of 320500623 is about 684.3468816954.

Adding to 320500623 its reverse (326005023), we get a palindrome (646505646).

It can be divided in two parts, 320500 and 623, that added together give a palindrome (321123).

The spelling of 320500623 in words is "three hundred twenty million, five hundred thousand, six hundred twenty-three".