230171939 has 2 divisors, whose sum is σ = 230171940. Its totient is φ = 230171938.

The previous prime is 230171911. The next prime is 230171941. The reversal of 230171939 is 939171032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 230171939 - 2¹⁶ = 230106403 is a prime.

It is a Sophie Germain prime.

Together with 230171941, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 230171899 and 230171908.

It is not a weakly prime, because it can be changed into another prime (230171969) 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, 115085969 + 115085970.

It is an arithmetic number, because the mean of its divisors is an integer number (115085970).

Almost surely, 2^230171939 is an apocalyptic number.

230171939 is a deficient number, since it is larger than the sum of its proper divisors (1).

230171939 is an equidigital number, since it uses as much as digits as its factorization.

230171939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 230171939 is about 15171.4184900424. The cubic root of 230171939 is about 612.8452044902.

The spelling of 230171939 in words is "two hundred thirty million, one hundred seventy-one thousand, nine hundred thirty-nine".