1323223614509 has 2 divisors, whose sum is σ = 1323223614510. Its totient is φ = 1323223614508.

The previous prime is 1323223614487. The next prime is 1323223614539. The reversal of 1323223614509 is 9054163223231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1127253605284 + 195970009225 = 1061722^2 + 442685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323223614509 - 2¹² = 1323223610413 is a prime.

It is a super-2 number, since 2×1323223614509² (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 (1323223614539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661611807254 + 661611807255.

It is an arithmetic number, because the mean of its divisors is an integer number (661611807255).

Almost surely, 2^{1323223614509} is an apocalyptic number.

It is an amenable number.

1323223614509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323223614509 is an equidigital number, since it uses as much as digits as its factorization.

1323223614509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 1323223614509 in words is "one trillion, three hundred twenty-three billion, two hundred twenty-three million, six hundred fourteen thousand, five hundred nine".