1330541321 has 2 divisors, whose sum is σ = 1330541322. Its totient is φ = 1330541320.

The previous prime is 1330541299. The next prime is 1330541323. The reversal of 1330541321 is 1231450331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828288400 + 502252921 = 28780^2 + 22411^2 .

It is an emirp because it is prime and its reverse (1231450331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1330541321 - 2²² = 1326347017 is a prime.

Together with 1330541323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1330541323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665270660 + 665270661.

It is an arithmetic number, because the mean of its divisors is an integer number (665270661).

Almost surely, 2^1330541321 is an apocalyptic number.

It is an amenable number.

1330541321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330541321 is an equidigital number, since it uses as much as digits as its factorization.

1330541321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1330541321 is about 36476.5859285104. The cubic root of 1330541321 is about 1099.8736276312.

Adding to 1330541321 its reverse (1231450331), we get a palindrome (2561991652).

The spelling of 1330541321 in words is "one billion, three hundred thirty million, five hundred forty-one thousand, three hundred twenty-one".