238723151 has 2 divisors, whose sum is σ = 238723152. Its totient is φ = 238723150.

The previous prime is 238723127. The next prime is 238723159. The reversal of 238723151 is 151327832.

238723151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238723151 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 (238723159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119361575 + 119361576.

It is an arithmetic number, because the mean of its divisors is an integer number (119361576).

Almost surely, 2^238723151 is an apocalyptic number.

238723151 is a deficient number, since it is larger than the sum of its proper divisors (1).

238723151 is an equidigital number, since it uses as much as digits as its factorization.

238723151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 238723151 is about 15450.6683026981. The cubic root of 238723151 is about 620.3424668855.

The spelling of 238723151 in words is "two hundred thirty-eight million, seven hundred twenty-three thousand, one hundred fifty-one".