1320832217 has 2 divisors, whose sum is σ = 1320832218. Its totient is φ = 1320832216.

The previous prime is 1320832199. The next prime is 1320832223. The reversal of 1320832217 is 7122380231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1279564441 + 41267776 = 35771^2 + 6424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320832217 - 2¹² = 1320828121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320832217.

It is not a weakly prime, because it can be changed into another prime (1320832237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660416108 + 660416109.

It is an arithmetic number, because the mean of its divisors is an integer number (660416109).

Almost surely, 2^1320832217 is an apocalyptic number.

It is an amenable number.

1320832217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320832217 is an equidigital number, since it uses as much as digits as its factorization.

1320832217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1320832217 is about 36343.2554540729. The cubic root of 1320832217 is about 1097.1917948463.

The spelling of 1320832217 in words is "one billion, three hundred twenty million, eight hundred thirty-two thousand, two hundred seventeen".