1320434322997 has 2 divisors, whose sum is σ = 1320434322998. Its totient is φ = 1320434322996.

The previous prime is 1320434322989. The next prime is 1320434323049. The reversal of 1320434322997 is 7992234340231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1201937276241 + 118497046756 = 1096329^2 + 344234^2 .

It is an emirp because it is prime and its reverse (7992234340231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320434322997 - 2³ = 1320434322989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320434322997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320434322967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660217161498 + 660217161499.

It is an arithmetic number, because the mean of its divisors is an integer number (660217161499).

Almost surely, 2^{1320434322997} is an apocalyptic number.

It is an amenable number.

1320434322997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320434322997 is an equidigital number, since it uses as much as digits as its factorization.

1320434322997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 1320434322997 in words is "one trillion, three hundred twenty billion, four hundred thirty-four million, three hundred twenty-two thousand, nine hundred ninety-seven".