311331103321 has 16 divisors (see below), whose sum is σ = 393116661504. Its totient is φ = 240237955584.

The previous prime is 311331103301. The next prime is 311331103337. The reversal of 311331103321 is 123301133113.

It is a cyclic number.

It is not a de Polignac number, because 311331103321 - 2¹⁹ = 311330579033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311331103292 and 311331103301.

It is not an unprimeable number, because it can be changed into a prime (311331103301) 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 15 ways as a sum of consecutive naturals, for example, 56871780 + ... + 56877253.

It is an arithmetic number, because the mean of its divisors is an integer number (24569791344).

Almost surely, 2^311331103321 is an apocalyptic number.

It is an amenable number.

311331103321 is a deficient number, since it is larger than the sum of its proper divisors (81785558183).

311331103321 is a wasteful number, since it uses less digits than its factorization.

311331103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113749080.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 311331103321 its reverse (123301133113), we get a palindrome (434632236434).

The spelling of 311331103321 in words is "three hundred eleven billion, three hundred thirty-one million, one hundred three thousand, three hundred twenty-one".