1323111013493 has 2 divisors, whose sum is σ = 1323111013494. Its totient is φ = 1323111013492.

The previous prime is 1323111013397. The next prime is 1323111013501. The reversal of 1323111013493 is 3943101113231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 986052972004 + 337058041489 = 993002^2 + 580567^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323111013493 - 2¹² = 1323111009397 is a prime.

It is a super-2 number, since 2×1323111013493² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323111013093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661555506746 + 661555506747.

It is an arithmetic number, because the mean of its divisors is an integer number (661555506747).

Almost surely, 2^{1323111013493} is an apocalyptic number.

It is an amenable number.

1323111013493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323111013493 is an equidigital number, since it uses as much as digits as its factorization.

1323111013493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 1323111013493 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, thirteen thousand, four hundred ninety-three".