1329313241 has 2 divisors, whose sum is σ = 1329313242. Its totient is φ = 1329313240.

The previous prime is 1329313229. The next prime is 1329313253. The reversal of 1329313241 is 1423139231.

It is a balanced prime because it is at equal distance from previous prime (1329313229) and next prime (1329313253).

It can be written as a sum of positive squares in only one way, i.e., 1025856841 + 303456400 = 32029^2 + 17420^2 .

It is an emirp because it is prime and its reverse (1423139231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1329313241 - 2¹⁰ = 1329312217 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 (1329313211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664656620 + 664656621.

It is an arithmetic number, because the mean of its divisors is an integer number (664656621).

Almost surely, 2^1329313241 is an apocalyptic number.

It is an amenable number.

1329313241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329313241 is an equidigital number, since it uses as much as digits as its factorization.

1329313241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 1329313241 is about 36459.7482300687. The cubic root of 1329313241 is about 1099.5351316700.

The spelling of 1329313241 in words is "one billion, three hundred twenty-nine million, three hundred thirteen thousand, two hundred forty-one".