31230330221141 has 2 divisors, whose sum is σ = 31230330221142. Its totient is φ = 31230330221140.

The previous prime is 31230330221093. The next prime is 31230330221239. The reversal of 31230330221141 is 14112203303213.

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., 31225464600625 + 4865620516 = 5587975^2 + 69754^2 .

It is an emirp because it is prime and its reverse (14112203303213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31230330221141 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31230330221141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31230330221341) 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, 15615165110570 + 15615165110571.

It is an arithmetic number, because the mean of its divisors is an integer number (15615165110571).

Almost surely, 2^{31230330221141} is an apocalyptic number.

It is an amenable number.

31230330221141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230330221141 is an equidigital number, since it uses as much as digits as its factorization.

31230330221141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31230330221141 its reverse (14112203303213), we get a palindrome (45342533524354).

The spelling of 31230330221141 in words is "thirty-one trillion, two hundred thirty billion, three hundred thirty million, two hundred twenty-one thousand, one hundred forty-one".