31332232201321 has 2 divisors, whose sum is σ = 31332232201322. Its totient is φ = 31332232201320.

The previous prime is 31332232201313. The next prime is 31332232201339. The reversal of 31332232201321 is 12310223223313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29684397858921 + 1647834342400 = 5448339^2 + 1283680^2 .

It is a cyclic number.

It is not a de Polignac number, because 31332232201321 - 2³ = 31332232201313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31332232201321.

It is not a weakly prime, because it can be changed into another prime (31332232202321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15666116100660 + 15666116100661.

It is an arithmetic number, because the mean of its divisors is an integer number (15666116100661).

Almost surely, 2^{31332232201321} is an apocalyptic number.

It is an amenable number.

31332232201321 is a deficient number, since it is larger than the sum of its proper divisors (1).

31332232201321 is an equidigital number, since it uses as much as digits as its factorization.

31332232201321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31332232201321 its reverse (12310223223313), we get a palindrome (43642455424634).

The spelling of 31332232201321 in words is "thirty-one trillion, three hundred thirty-two billion, two hundred thirty-two million, two hundred one thousand, three hundred twenty-one".