1331321031203 has 2 divisors, whose sum is σ = 1331321031204. Its totient is φ = 1331321031202.

The previous prime is 1331321031197. The next prime is 1331321031233. The reversal of 1331321031203 is 3021301231331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331321031203 - 2²⁰ = 1331319982627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331321031233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665660515601 + 665660515602.

It is an arithmetic number, because the mean of its divisors is an integer number (665660515602).

Almost surely, 2^{1331321031203} is an apocalyptic number.

1331321031203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331321031203 is an equidigital number, since it uses as much as digits as its factorization.

1331321031203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1331321031203 its reverse (3021301231331), we get a palindrome (4352622262534).

The spelling of 1331321031203 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, thirty-one thousand, two hundred three".