1321003302823 has 2 divisors, whose sum is σ = 1321003302824. Its totient is φ = 1321003302822.

The previous prime is 1321003302811. The next prime is 1321003302859. The reversal of 1321003302823 is 3282033001231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321003302823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321003302791 and 1321003302800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321003302893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660501651411 + 660501651412.

It is an arithmetic number, because the mean of its divisors is an integer number (660501651412).

Almost surely, 2^{1321003302823} is an apocalyptic number.

1321003302823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321003302823 is an equidigital number, since it uses as much as digits as its factorization.

1321003302823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 1321003302823 in words is "one trillion, three hundred twenty-one billion, three million, three hundred two thousand, eight hundred twenty-three".