320131444431 has 8 divisors (see below), whose sum is σ = 426844876464. Its totient is φ = 213419487680.

The previous prime is 320131444427. The next prime is 320131444447. The reversal of 320131444431 is 134444131023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320131444431 - 2² = 320131444427 is a prime.

It is a super-2 number, since 2×320131444431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131444471) 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 7 ways as a sum of consecutive naturals, for example, 322771 + ... + 862811.

It is an arithmetic number, because the mean of its divisors is an integer number (53355609558).

Almost surely, 2^320131444431 is an apocalyptic number.

320131444431 is a deficient number, since it is larger than the sum of its proper divisors (106713432033).

320131444431 is a wasteful number, since it uses less digits than its factorization.

320131444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737641.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 320131444431 its reverse (134444131023), we get a palindrome (454575575454).

The spelling of 320131444431 in words is "three hundred twenty billion, one hundred thirty-one million, four hundred forty-four thousand, four hundred thirty-one".