320404012423 has 4 divisors (see below), whose sum is σ = 349531649928. Its totient is φ = 291276374920.

The previous prime is 320404012421. The next prime is 320404012471. The reversal of 320404012423 is 324210404023.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 320404012423 - 2¹ = 320404012421 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 (320404012421) 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 3 ways as a sum of consecutive naturals, for example, 14563818736 + ... + 14563818757.

It is an arithmetic number, because the mean of its divisors is an integer number (87382912482).

Almost surely, 2^320404012423 is an apocalyptic number.

320404012423 is a deficient number, since it is larger than the sum of its proper divisors (29127637505).

320404012423 is a wasteful number, since it uses less digits than its factorization.

320404012423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29127637504.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 320404012423 its reverse (324210404023), we get a palindrome (644614416446).

The spelling of 320404012423 in words is "three hundred twenty billion, four hundred four million, twelve thousand, four hundred twenty-three".