230508809 has 2 divisors, whose sum is σ = 230508810. Its totient is φ = 230508808.

The previous prime is 230508799. The next prime is 230508823. The reversal of 230508809 is 908805032.

230508809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230189584 + 319225 = 15172^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 230508809 - 2⁴ = 230508793 is a prime.

It is a super-2 number, since 2×230508809² = 106268622053196962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (230502809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115254404 + 115254405.

It is an arithmetic number, because the mean of its divisors is an integer number (115254405).

Almost surely, 2^230508809 is an apocalyptic number.

It is an amenable number.

230508809 is a deficient number, since it is larger than the sum of its proper divisors (1).

230508809 is an equidigital number, since it uses as much as digits as its factorization.

230508809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 230508809 is about 15182.5165568821. The cubic root of 230508809 is about 613.1440369340.

The spelling of 230508809 in words is "two hundred thirty million, five hundred eight thousand, eight hundred nine".