238323851 has 2 divisors, whose sum is σ = 238323852. Its totient is φ = 238323850.

The previous prime is 238323829. The next prime is 238323871. The reversal of 238323851 is 158323832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238323851 - 2²⁶ = 171214987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238323871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119161925 + 119161926.

It is an arithmetic number, because the mean of its divisors is an integer number (119161926).

Almost surely, 2^238323851 is an apocalyptic number.

238323851 is a deficient number, since it is larger than the sum of its proper divisors (1).

238323851 is an equidigital number, since it uses as much as digits as its factorization.

238323851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 238323851 is about 15437.7411236230. The cubic root of 238323851 is about 619.9964021643.

The spelling of 238323851 in words is "two hundred thirty-eight million, three hundred twenty-three thousand, eight hundred fifty-one".