238239251 has 2 divisors, whose sum is σ = 238239252. Its totient is φ = 238239250.

The previous prime is 238239191. The next prime is 238239277. The reversal of 238239251 is 152932832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238239251 - 2¹⁴ = 238222867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238232251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119119625 + 119119626.

It is an arithmetic number, because the mean of its divisors is an integer number (119119626).

Almost surely, 2^238239251 is an apocalyptic number.

238239251 is a deficient number, since it is larger than the sum of its proper divisors (1).

238239251 is an equidigital number, since it uses as much as digits as its factorization.

238239251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 238239251 is about 15435.0008422416. Note that the first 3 decimals coincide. The cubic root of 238239251 is about 619.9230315483.

The spelling of 238239251 in words is "two hundred thirty-eight million, two hundred thirty-nine thousand, two hundred fifty-one".