1001303309 has 2 divisors, whose sum is σ = 1001303310. Its totient is φ = 1001303308.

The previous prime is 1001303299. The next prime is 1001303339. The reversal of 1001303309 is 9033031001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999192100 + 2111209 = 31610^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001303309 - 2⁴ = 1001303293 is a prime.

It is a super-2 number, since 2×1001303309² = 2005216633228698962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001303339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500651654 + 500651655.

It is an arithmetic number, because the mean of its divisors is an integer number (500651655).

Almost surely, 2^1001303309 is an apocalyptic number.

It is an amenable number.

1001303309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001303309 is an equidigital number, since it uses as much as digits as its factorization.

1001303309 is an evil number, because the sum of its binary digits is even.

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

The square root of 1001303309 is about 31643.3770163679. The cubic root of 1001303309 is about 1000.4342477349.

The spelling of 1001303309 in words is "one billion, one million, three hundred three thousand, three hundred nine".