238828171 has 2 divisors, whose sum is σ = 238828172. Its totient is φ = 238828170.

The previous prime is 238828169. The next prime is 238828231. The reversal of 238828171 is 171828832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238828171 - 2¹ = 238828169 is a prime.

Together with 238828169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (238828111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119414085 + 119414086.

It is an arithmetic number, because the mean of its divisors is an integer number (119414086).

Almost surely, 2^238828171 is an apocalyptic number.

238828171 is a deficient number, since it is larger than the sum of its proper divisors (1).

238828171 is an equidigital number, since it uses as much as digits as its factorization.

238828171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 40.

The square root of 238828171 is about 15454.0664874977. The cubic root of 238828171 is about 620.4334213580.

The spelling of 238828171 in words is "two hundred thirty-eight million, eight hundred twenty-eight thousand, one hundred seventy-one".