320320030123 has 4 divisors (see below), whose sum is σ = 320321424600. Its totient is φ = 320318635648.

The previous prime is 320320030061. The next prime is 320320030139. The reversal of 320320030123 is 321030023023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321030023023 = 107 ⋅3000280589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320320030123 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 320320030123.

It is not an unprimeable number, because it can be changed into a prime (320320030423) 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, 262198 + ... + 842251.

It is an arithmetic number, because the mean of its divisors is an integer number (80080356150).

Almost surely, 2^320320030123 is an apocalyptic number.

320320030123 is a deficient number, since it is larger than the sum of its proper divisors (1394477).

320320030123 is a wasteful number, since it uses less digits than its factorization.

320320030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394476.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 320320030123 its reverse (321030023023), we get a palindrome (641350053146).

It can be divided in two parts, 3203200 and 30123, that added together give a palindrome (3233323).

The spelling of 320320030123 in words is "three hundred twenty billion, three hundred twenty million, thirty thousand, one hundred twenty-three".