238317121 has 4 divisors (see below), whose sum is σ = 272362432. Its totient is φ = 204271812.

The previous prime is 238317103. The next prime is 238317173. The reversal of 238317121 is 121713832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238317121 - 2⁷ = 238316993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238317121.

It is not an unprimeable number, because it can be changed into a prime (238317721) 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 in 3 ways as a sum of consecutive naturals, for example, 17022645 + ... + 17022658.

It is an arithmetic number, because the mean of its divisors is an integer number (68090608).

Almost surely, 2^238317121 is an apocalyptic number.

It is an amenable number.

238317121 is a deficient number, since it is larger than the sum of its proper divisors (34045311).

238317121 is an equidigital number, since it uses as much as digits as its factorization.

238317121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34045310.

The product of its digits is 2016, while the sum is 28.

The square root of 238317121 is about 15437.5231497802. The cubic root of 238317121 is about 619.9905661069.

The spelling of 238317121 in words is "two hundred thirty-eight million, three hundred seventeen thousand, one hundred twenty-one".