3157309 has 2 divisors, whose sum is σ = 3157310. Its totient is φ = 3157308.

The previous prime is 3157303. The next prime is 3157313. The reversal of 3157309 is 9037513.

3157309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3080025 + 77284 = 1755^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 3157309 - 2⁵ = 3157277 is a prime.

It is a Chen prime.

3157309 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3157303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1578654 + 1578655.

It is an arithmetic number, because the mean of its divisors is an integer number (1578655).

Almost surely, 2^3157309 is an apocalyptic number.

It is an amenable number.

3157309 is a deficient number, since it is larger than the sum of its proper divisors (1).

3157309 is an equidigital number, since it uses as much as digits as its factorization.

3157309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 3157309 is about 1776.8818193678. The cubic root of 3157309 is about 146.7030115392.

The spelling of 3157309 in words is "three million, one hundred fifty-seven thousand, three hundred nine".