3100309 has 2 divisors, whose sum is σ = 3100310. Its totient is φ = 3100308.

The previous prime is 3100301. The next prime is 3100313. The reversal of 3100309 is 9030013.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2640625 + 459684 = 1625^2 + 678^2 .

It is a cyclic number.

It is not a de Polignac number, because 3100309 - 2³ = 3100301 is a prime.

It is a super-2 number, since 2×3100309² = 19223831790962, which contains 22 as substring.

It is equal to p₂₂₃₅₁₃ and since 3100309 and 223513 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 3100292 and 3100301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3100301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550154 + 1550155.

It is an arithmetic number, because the mean of its divisors is an integer number (1550155).

Almost surely, 2^3100309 is an apocalyptic number.

It is an amenable number.

3100309 is a deficient number, since it is larger than the sum of its proper divisors (1).

3100309 is an equidigital number, since it uses as much as digits as its factorization.

3100309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 3100309 is about 1760.7694340827. The cubic root of 3100309 is about 145.8148180757.

The spelling of 3100309 in words is "three million, one hundred thousand, three hundred nine".