311440310121321 has 24 divisors (see below), whose sum is σ = 459030134808960. Its totient is φ = 203433809623200.

The previous prime is 311440310121313. The next prime is 311440310121341. The reversal of 311440310121321 is 123121013044113.

311440310121321 is a `hidden beast` number, since 3 + 1 + 1 + 4 + 4 + 0 + 310 + 1 + 21 + 321 = 666.

It is not a de Polignac number, because 311440310121321 - 2³ = 311440310121313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311440310121301) 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 23 ways as a sum of consecutive naturals, for example, 1671782350 + ... + 1671968631.

It is an arithmetic number, because the mean of its divisors is an integer number (19126255617040).

Almost surely, 2^{311440310121321} is an apocalyptic number.

It is an amenable number.

311440310121321 is a deficient number, since it is larger than the sum of its proper divisors (147589824687639).

311440310121321 is a wasteful number, since it uses less digits than its factorization.

311440310121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343751197 (or 3343751194 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 311440310121321 its reverse (123121013044113), we get a palindrome (434561323165434).

The spelling of 311440310121321 in words is "three hundred eleven trillion, four hundred forty billion, three hundred ten million, one hundred twenty-one thousand, three hundred twenty-one".