1321313003323 has 2 divisors, whose sum is σ = 1321313003324. Its totient is φ = 1321313003322.

The previous prime is 1321313003249. The next prime is 1321313003341. The reversal of 1321313003323 is 3233003131231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321313003323 - 2²⁹ = 1320776132411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321313003393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660656501661 + 660656501662.

It is an arithmetic number, because the mean of its divisors is an integer number (660656501662).

Almost surely, 2^{1321313003323} is an apocalyptic number.

1321313003323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321313003323 is an equidigital number, since it uses as much as digits as its factorization.

1321313003323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 1321313003323 its reverse (3233003131231), we get a palindrome (4554316134554).

The spelling of 1321313003323 in words is "one trillion, three hundred twenty-one billion, three hundred thirteen million, three thousand, three hundred twenty-three".