230881909 has 2 divisors, whose sum is σ = 230881910. Its totient is φ = 230881908.

The previous prime is 230881841. The next prime is 230881943. The reversal of 230881909 is 909188032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201015684 + 29866225 = 14178^2 + 5465^2 .

It is a cyclic number.

It is not a de Polignac number, because 230881909 - 2¹³ = 230873717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230881969) 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, 115440954 + 115440955.

It is an arithmetic number, because the mean of its divisors is an integer number (115440955).

Almost surely, 2^230881909 is an apocalyptic number.

It is an amenable number.

230881909 is a deficient number, since it is larger than the sum of its proper divisors (1).

230881909 is an equidigital number, since it uses as much as digits as its factorization.

230881909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 230881909 is about 15194.7987482559. The cubic root of 230881909 is about 613.4746688763.

The spelling of 230881909 in words is "two hundred thirty million, eight hundred eighty-one thousand, nine hundred nine".