1031321311303 has 2 divisors, whose sum is σ = 1031321311304. Its totient is φ = 1031321311302.

The previous prime is 1031321311277. The next prime is 1031321311373. The reversal of 1031321311303 is 3031131231301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031321311303 - 2¹⁷ = 1031321180231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031321311373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515660655651 + 515660655652.

It is an arithmetic number, because the mean of its divisors is an integer number (515660655652).

Almost surely, 2^{1031321311303} is an apocalyptic number.

1031321311303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031321311303 is an equidigital number, since it uses as much as digits as its factorization.

1031321311303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1031321311303 its reverse (3031131231301), we get a palindrome (4062452542604).

The spelling of 1031321311303 in words is "one trillion, thirty-one billion, three hundred twenty-one million, three hundred eleven thousand, three hundred three".