321440031315771 has 8 divisors (see below), whose sum is σ = 428826276180240. Its totient is φ = 214173570330912.

The previous prime is 321440031315661. The next prime is 321440031315797. The reversal of 321440031315771 is 177513130044123.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-321440031315771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321440035315771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29945963640 + ... + 29945974373.

It is an arithmetic number, because the mean of its divisors is an integer number (53603284522530).

Almost surely, 2^{321440031315771} is an apocalyptic number.

321440031315771 is a deficient number, since it is larger than the sum of its proper divisors (107386244864469).

321440031315771 is a wasteful number, since it uses less digits than its factorization.

321440031315771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59891939805.

The product of its (nonzero) digits is 211680, while the sum is 42.

Adding to 321440031315771 its reverse (177513130044123), we get a palindrome (498953161359894).

The spelling of 321440031315771 in words is "three hundred twenty-one trillion, four hundred forty billion, thirty-one million, three hundred fifteen thousand, seven hundred seventy-one".