238785023 has 2 divisors, whose sum is σ = 238785024. Its totient is φ = 238785022.

The previous prime is 238785017. The next prime is 238785047. The reversal of 238785023 is 320587832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238785023 is a prime.

It is a super-2 number, since 2×238785023² = 114036574418221058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238785083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119392511 + 119392512.

It is an arithmetic number, because the mean of its divisors is an integer number (119392512).

Almost surely, 2^238785023 is an apocalyptic number.

238785023 is a deficient number, since it is larger than the sum of its proper divisors (1).

238785023 is an equidigital number, since it uses as much as digits as its factorization.

238785023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 238785023 is about 15452.6704164685. The cubic root of 238785023 is about 620.3960554790.

The spelling of 238785023 in words is "two hundred thirty-eight million, seven hundred eighty-five thousand, twenty-three".