1328118313 has 2 divisors, whose sum is σ = 1328118314. Its totient is φ = 1328118312.

The previous prime is 1328118283. The next prime is 1328118331. The reversal of 1328118313 is 3138118231.

Together with next prime (1328118331) 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., 1260747049 + 67371264 = 35507^2 + 8208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328118313 - 2⁹ = 1328117801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328118383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664059156 + 664059157.

It is an arithmetic number, because the mean of its divisors is an integer number (664059157).

Almost surely, 2^1328118313 is an apocalyptic number.

It is an amenable number.

1328118313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328118313 is an equidigital number, since it uses as much as digits as its factorization.

1328118313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 1328118313 is about 36443.3575977845. The cubic root of 1328118313 is about 1099.2055732302.

The spelling of 1328118313 in words is "one billion, three hundred twenty-eight million, one hundred eighteen thousand, three hundred thirteen".