311440320232321 has 8 divisors (see below), whose sum is σ = 355933473534720. Its totient is φ = 266947586675808.

The previous prime is 311440320232313. The next prime is 311440320232333. The reversal of 311440320232321 is 123232023044113.

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 311440320232321 - 2³ = 311440320232313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311440320232421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103344916 + ... + 106315813.

It is an arithmetic number, because the mean of its divisors is an integer number (44491684191840).

Almost surely, 2^{311440320232321} is an apocalyptic number.

It is an amenable number.

311440320232321 is a deficient number, since it is larger than the sum of its proper divisors (44493153302399).

311440320232321 is a wasteful number, since it uses less digits than its factorization.

311440320232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209872943.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 311440320232321 its reverse (123232023044113), we get a palindrome (434672343276434).

The spelling of 311440320232321 in words is "three hundred eleven trillion, four hundred forty billion, three hundred twenty million, two hundred thirty-two thousand, three hundred twenty-one".