1330312289 has 2 divisors, whose sum is σ = 1330312290. Its totient is φ = 1330312288.

The previous prime is 1330312231. The next prime is 1330312337. The reversal of 1330312289 is 9822130331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1171350625 + 158961664 = 34225^2 + 12608^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330312289 - 2²⁸ = 1061876833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1330312219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665156144 + 665156145.

It is an arithmetic number, because the mean of its divisors is an integer number (665156145).

Almost surely, 2^1330312289 is an apocalyptic number.

It is an amenable number.

1330312289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330312289 is an equidigital number, since it uses as much as digits as its factorization.

1330312289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1330312289 is about 36473.4463548483. The cubic root of 1330312289 is about 1099.8105152953.

The spelling of 1330312289 in words is "one billion, three hundred thirty million, three hundred twelve thousand, two hundred eighty-nine".