1323319945687 has 2 divisors, whose sum is σ = 1323319945688. Its totient is φ = 1323319945686.

The previous prime is 1323319945663. The next prime is 1323319945729. The reversal of 1323319945687 is 7865499133231.

It is a weak prime.

It is an emirp because it is prime and its reverse (7865499133231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323319945687 - 2⁷ = 1323319945559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323319945637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661659972843 + 661659972844.

It is an arithmetic number, because the mean of its divisors is an integer number (661659972844).

Almost surely, 2^{1323319945687} is an apocalyptic number.

1323319945687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323319945687 is an equidigital number, since it uses as much as digits as its factorization.

1323319945687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 61.

The spelling of 1323319945687 in words is "one trillion, three hundred twenty-three billion, three hundred nineteen million, nine hundred forty-five thousand, six hundred eighty-seven".