1301003309 has 2 divisors, whose sum is σ = 1301003310. Its totient is φ = 1301003308.

The previous prime is 1301003269. The next prime is 1301003357. The reversal of 1301003309 is 9033001031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1047493225 + 253510084 = 32365^2 + 15922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301003309 - 2¹² = 1300999213 is a prime.

It is a super-2 number, since 2×1301003309² = 3385219220057898962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301003369) 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, 650501654 + 650501655.

It is an arithmetic number, because the mean of its divisors is an integer number (650501655).

Almost surely, 2^1301003309 is an apocalyptic number.

It is an amenable number.

1301003309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301003309 is an equidigital number, since it uses as much as digits as its factorization.

1301003309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 20.

The square root of 1301003309 is about 36069.4234636485. The cubic root of 1301003309 is about 1091.6735811953.

The spelling of 1301003309 in words is "one billion, three hundred one million, three thousand, three hundred nine".