1031330221057 has 2 divisors, whose sum is σ = 1031330221058. Its totient is φ = 1031330221056.

The previous prime is 1031330220997. The next prime is 1031330221087. The reversal of 1031330221057 is 7501220331301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 998768379456 + 32561841601 = 999384^2 + 180449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031330221057 - 2¹¹ = 1031330219009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031330221087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515665110528 + 515665110529.

It is an arithmetic number, because the mean of its divisors is an integer number (515665110529).

Almost surely, 2^{1031330221057} is an apocalyptic number.

It is an amenable number.

1031330221057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031330221057 is an equidigital number, since it uses as much as digits as its factorization.

1031330221057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 1031330221057 its reverse (7501220331301), we get a palindrome (8532550552358).

The spelling of 1031330221057 in words is "one trillion, thirty-one billion, three hundred thirty million, two hundred twenty-one thousand, fifty-seven".