1304328013 has 2 divisors, whose sum is σ = 1304328014. Its totient is φ = 1304328012.

The previous prime is 1304327993. The next prime is 1304328031. The reversal of 1304328013 is 3108234031.

Together with next prime (1304328031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1216474884 + 87853129 = 34878^2 + 9373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304328013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304328083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652164006 + 652164007.

It is an arithmetic number, because the mean of its divisors is an integer number (652164007).

Almost surely, 2^1304328013 is an apocalyptic number.

It is an amenable number.

1304328013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304328013 is an equidigital number, since it uses as much as digits as its factorization.

1304328013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1304328013 is about 36115.4816249209. The cubic root of 1304328013 is about 1092.6027113434.

The spelling of 1304328013 in words is "one billion, three hundred four million, three hundred twenty-eight thousand, thirteen".