1331020321303 has 2 divisors, whose sum is σ = 1331020321304. Its totient is φ = 1331020321302.

The previous prime is 1331020321259. The next prime is 1331020321313. The reversal of 1331020321303 is 3031230201331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331020321303 - 2²⁹ = 1330483450391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331020321313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665510160651 + 665510160652.

It is an arithmetic number, because the mean of its divisors is an integer number (665510160652).

Almost surely, 2^{1331020321303} is an apocalyptic number.

1331020321303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331020321303 is an equidigital number, since it uses as much as digits as its factorization.

1331020321303 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 22.

Adding to 1331020321303 its reverse (3031230201331), we get a palindrome (4362250522634).

The spelling of 1331020321303 in words is "one trillion, three hundred thirty-one billion, twenty million, three hundred twenty-one thousand, three hundred three".