1331320331093 has 2 divisors, whose sum is σ = 1331320331094. Its totient is φ = 1331320331092.

The previous prime is 1331320331083. The next prime is 1331320331219. The reversal of 1331320331093 is 3901330231331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 690797024164 + 640523306929 = 831142^2 + 800327^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331320331093 - 2¹² = 1331320326997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331320331083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665660165546 + 665660165547.

It is an arithmetic number, because the mean of its divisors is an integer number (665660165547).

Almost surely, 2^{1331320331093} is an apocalyptic number.

It is an amenable number.

1331320331093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331320331093 is an equidigital number, since it uses as much as digits as its factorization.

1331320331093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 32.

The spelling of 1331320331093 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, three hundred thirty-one thousand, ninety-three".