230171911 has 2 divisors, whose sum is σ = 230171912. Its totient is φ = 230171910.

The previous prime is 230171899. The next prime is 230171939. The reversal of 230171911 is 119171032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230171911 - 2¹³ = 230163719 is a prime.

It is a super-2 number, since 2×230171911² = 105958217226783842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230171941) 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, 115085955 + 115085956.

It is an arithmetic number, because the mean of its divisors is an integer number (115085956).

Almost surely, 2^230171911 is an apocalyptic number.

230171911 is a deficient number, since it is larger than the sum of its proper divisors (1).

230171911 is an equidigital number, since it uses as much as digits as its factorization.

230171911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 230171911 is about 15171.4175672546. The cubic root of 230171911 is about 612.8451796397.

The spelling of 230171911 in words is "two hundred thirty million, one hundred seventy-one thousand, nine hundred eleven".