10311330221 has 2 divisors, whose sum is σ = 10311330222. Its totient is φ = 10311330220.

The previous prime is 10311330209. The next prime is 10311330223. The reversal of 10311330221 is 12203311301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6969912196 + 3341418025 = 83486^2 + 57805^2 .

It is a cyclic number.

It is not a de Polignac number, because 10311330221 - 2⁶ = 10311330157 is a prime.

Together with 10311330223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10311330221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10311330223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5155665110 + 5155665111.

It is an arithmetic number, because the mean of its divisors is an integer number (5155665111).

Almost surely, 2^10311330221 is an apocalyptic number.

It is an amenable number.

10311330221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10311330221 is an equidigital number, since it uses as much as digits as its factorization.

10311330221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 10311330221 its reverse (12203311301), we get a palindrome (22514641522).

The spelling of 10311330221 in words is "ten billion, three hundred eleven million, three hundred thirty thousand, two hundred twenty-one".