1323001999993 has 2 divisors, whose sum is σ = 1323001999994. Its totient is φ = 1323001999992.

The previous prime is 1323001999973. The next prime is 1323002000017. The reversal of 1323001999993 is 3999991003231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1179945580009 + 143056419984 = 1086253^2 + 378228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323001999993 - 2²⁹ = 1322465129081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323001999973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661500999996 + 661500999997.

It is an arithmetic number, because the mean of its divisors is an integer number (661500999997).

Almost surely, 2^{1323001999993} is an apocalyptic number.

It is an amenable number.

1323001999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323001999993 is an equidigital number, since it uses as much as digits as its factorization.

1323001999993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3188646, while the sum is 58.

The spelling of 1323001999993 in words is "one trillion, three hundred twenty-three billion, one million, nine hundred ninety-nine thousand, nine hundred ninety-three".