320131444403 has 4 divisors (see below), whose sum is σ = 320132688600. Its totient is φ = 320130200208.

The previous prime is 320131444357. The next prime is 320131444417. The reversal of 320131444403 is 304444131023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320131444403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320131444103) 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, 76853 + ... + 803846.

It is an arithmetic number, because the mean of its divisors is an integer number (80033172150).

Almost surely, 2^320131444403 is an apocalyptic number.

320131444403 is a deficient number, since it is larger than the sum of its proper divisors (1244197).

320131444403 is an equidigital number, since it uses as much as digits as its factorization.

320131444403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244196.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 320131444403 its reverse (304444131023), we get a palindrome (624575575426).

The spelling of 320131444403 in words is "three hundred twenty billion, one hundred thirty-one million, four hundred forty-four thousand, four hundred three".