238211117 has 2 divisors, whose sum is σ = 238211118. Its totient is φ = 238211116.

The previous prime is 238211093. The next prime is 238211153. The reversal of 238211117 is 711112832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140873161 + 97337956 = 11869^2 + 9866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238211117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238211167) 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, 119105558 + 119105559.

It is an arithmetic number, because the mean of its divisors is an integer number (119105559).

Almost surely, 2^238211117 is an apocalyptic number.

It is an amenable number.

238211117 is a deficient number, since it is larger than the sum of its proper divisors (1).

238211117 is an equidigital number, since it uses as much as digits as its factorization.

238211117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 26.

The square root of 238211117 is about 15434.0894451211. The cubic root of 238211117 is about 619.8986280673.

Adding to 238211117 its reverse (711112832), we get a palindrome (949323949).

It can be divided in two parts, 238211 and 117, that added together give a cube (238328 = 62³).

The spelling of 238211117 in words is "two hundred thirty-eight million, two hundred eleven thousand, one hundred seventeen".