1331313220333 has 2 divisors, whose sum is σ = 1331313220334. Its totient is φ = 1331313220332.

The previous prime is 1331313220309. The next prime is 1331313220337. The reversal of 1331313220333 is 3330223131331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1316831986089 + 14481234244 = 1147533^2 + 120338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331313220333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331313220337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665656610166 + 665656610167.

It is an arithmetic number, because the mean of its divisors is an integer number (665656610167).

Almost surely, 2^{1331313220333} is an apocalyptic number.

It is an amenable number.

1331313220333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331313220333 is an equidigital number, since it uses as much as digits as its factorization.

1331313220333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 28.

Adding to 1331313220333 its reverse (3330223131331), we get a palindrome (4661536351664).

The spelling of 1331313220333 in words is "one trillion, three hundred thirty-one billion, three hundred thirteen million, two hundred twenty thousand, three hundred thirty-three".