30311233321321 has 2 divisors, whose sum is σ = 30311233321322. Its totient is φ = 30311233321320.

The previous prime is 30311233321211. The next prime is 30311233321339. The reversal of 30311233321321 is 12312333211303.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18541084836096 + 11770148485225 = 4305936^2 + 3430765^2 .

It is a cyclic number.

It is not a de Polignac number, because 30311233321321 - 2¹¹ = 30311233319273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30311233321321.

It is not a weakly prime, because it can be changed into another prime (30311233391321) 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 as a sum of consecutive naturals, namely, 15155616660660 + 15155616660661.

It is an arithmetic number, because the mean of its divisors is an integer number (15155616660661).

Almost surely, 2^{30311233321321} is an apocalyptic number.

It is an amenable number.

30311233321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

30311233321321 is an equidigital number, since it uses as much as digits as its factorization.

30311233321321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 30311233321321 its reverse (12312333211303), we get a palindrome (42623566532624).

The spelling of 30311233321321 in words is "thirty trillion, three hundred eleven billion, two hundred thirty-three million, three hundred twenty-one thousand, three hundred twenty-one".