311440102432321 has 4 divisors (see below), whose sum is σ = 311944867590852. Its totient is φ = 310935337273792.

The previous prime is 311440102432289. The next prime is 311440102432337. The reversal of 311440102432321 is 123234201044113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 169688790396225 + 141751312036096 = 13026465^2 + 11905936^2 .

It is a cyclic number.

It is not a de Polignac number, because 311440102432321 - 2⁵ = 311440102432289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311440102402321) 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, 252382578340 + ... + 252382579573.

It is an arithmetic number, because the mean of its divisors is an integer number (77986216897713).

Almost surely, 2^{311440102432321} is an apocalyptic number.

It is an amenable number.

311440102432321 is a deficient number, since it is larger than the sum of its proper divisors (504765158531).

311440102432321 is an equidigital number, since it uses as much as digits as its factorization.

311440102432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504765158530.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 311440102432321 its reverse (123234201044113), we get a palindrome (434674303476434).

The spelling of 311440102432321 in words is "three hundred eleven trillion, four hundred forty billion, one hundred two million, four hundred thirty-two thousand, three hundred twenty-one".