321440131322243 has 4 divisors (see below), whose sum is σ = 321444503006040. Its totient is φ = 321435759638448.

The previous prime is 321440131322183. The next prime is 321440131322263. The reversal of 321440131322243 is 342223131044123.

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 321440131322243 - 2¹⁴ = 321440131305859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321440131322263) 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, 2185731605 + ... + 2185878662.

It is an arithmetic number, because the mean of its divisors is an integer number (80361125751510).

Almost surely, 2^{321440131322243} is an apocalyptic number.

321440131322243 is a deficient number, since it is larger than the sum of its proper divisors (4371683797).

321440131322243 is an equidigital number, since it uses as much as digits as its factorization.

321440131322243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371683796.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 321440131322243 its reverse (342223131044123), we get a palindrome (663663262366366).

The spelling of 321440131322243 in words is "three hundred twenty-one trillion, four hundred forty billion, one hundred thirty-one million, three hundred twenty-two thousand, two hundred forty-three".