238447123 has 2 divisors, whose sum is σ = 238447124. Its totient is φ = 238447122.

The previous prime is 238447073. The next prime is 238447213. The reversal of 238447123 is 321744832.

238447123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (238447213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238447123 - 2¹³ = 238438931 is a prime.

It is not a weakly prime, because it can be changed into another prime (238447523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119223561 + 119223562.

It is an arithmetic number, because the mean of its divisors is an integer number (119223562).

Almost surely, 2^238447123 is an apocalyptic number.

238447123 is a deficient number, since it is larger than the sum of its proper divisors (1).

238447123 is an equidigital number, since it uses as much as digits as its factorization.

238447123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 34.

The square root of 238447123 is about 15441.7331604972. The cubic root of 238447123 is about 620.1032805745.

The spelling of 238447123 in words is "two hundred thirty-eight million, four hundred forty-seven thousand, one hundred twenty-three".