320131204423 has 4 divisors (see below), whose sum is σ = 338962451760. Its totient is φ = 301299957088.

The previous prime is 320131204409. The next prime is 320131204451. The reversal of 320131204423 is 324402131023.

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 320131204423 - 2⁹ = 320131203911 is a prime.

It is a super-2 number, since 2×320131204423² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131204123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9415623643 + ... + 9415623676.

It is an arithmetic number, because the mean of its divisors is an integer number (84740612940).

Almost surely, 2^320131204423 is an apocalyptic number.

320131204423 is a deficient number, since it is larger than the sum of its proper divisors (18831247337).

320131204423 is a wasteful number, since it uses less digits than its factorization.

320131204423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18831247336.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 320131204423 its reverse (324402131023), we get a palindrome (644533335446).

The spelling of 320131204423 in words is "three hundred twenty billion, one hundred thirty-one million, two hundred four thousand, four hundred twenty-three".