1320134209 has 2 divisors, whose sum is σ = 1320134210. Its totient is φ = 1320134208.

The previous prime is 1320134203. The next prime is 1320134267. The reversal of 1320134209 is 9024310231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1174569984 + 145564225 = 34272^2 + 12065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320134209 - 2¹⁵ = 1320101441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320134203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660067104 + 660067105.

It is an arithmetic number, because the mean of its divisors is an integer number (660067105).

Almost surely, 2^1320134209 is an apocalyptic number.

It is an amenable number.

1320134209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320134209 is an equidigital number, since it uses as much as digits as its factorization.

1320134209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1320134209 is about 36333.6511927992. The cubic root of 1320134209 is about 1096.9984865197.

The spelling of 1320134209 in words is "one billion, three hundred twenty million, one hundred thirty-four thousand, two hundred nine".