320452730623 has 4 divisors (see below), whose sum is σ = 320458415368. Its totient is φ = 320447045880.

The previous prime is 320452730621. The next prime is 320452730651. The reversal of 320452730623 is 326037254023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326037254023 = 13 ⋅25079788771.

It is a cyclic number.

It is not a de Polignac number, because 320452730623 - 2¹ = 320452730621 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 (320452730621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2756961 + ... + 2870842.

It is an arithmetic number, because the mean of its divisors is an integer number (80114603842).

Almost surely, 2^320452730623 is an apocalyptic number.

320452730623 is a deficient number, since it is larger than the sum of its proper divisors (5684745).

320452730623 is an equidigital number, since it uses as much as digits as its factorization.

320452730623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684744.

The product of its (nonzero) digits is 181440, while the sum is 37.

Adding to 320452730623 its reverse (326037254023), we get a palindrome (646489984646).

The spelling of 320452730623 in words is "three hundred twenty billion, four hundred fifty-two million, seven hundred thirty thousand, six hundred twenty-three".