1320001313 has 2 divisors, whose sum is σ = 1320001314. Its totient is φ = 1320001312.

The previous prime is 1320001301. The next prime is 1320001351. The reversal of 1320001313 is 3131000231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1319723584 + 277729 = 36328^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320001313 - 2²⁸ = 1051565857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320001013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660000656 + 660000657.

It is an arithmetic number, because the mean of its divisors is an integer number (660000657).

Almost surely, 2^1320001313 is an apocalyptic number.

It is an amenable number.

1320001313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320001313 is an equidigital number, since it uses as much as digits as its factorization.

1320001313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1320001313 is about 36331.8223187332. The cubic root of 1320001313 is about 1096.9616742011.

Adding to 1320001313 its reverse (3131000231), we get a palindrome (4451001544).

The spelling of 1320001313 in words is "one billion, three hundred twenty million, one thousand, three hundred thirteen".