238355923 has 16 divisors (see below), whose sum is σ = 274095360. Its totient is φ = 205549344.

The previous prime is 238355921. The next prime is 238355933. The reversal of 238355923 is 329553832.

It is a happy number.

238355923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238355923 - 2¹ = 238355921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238355921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3588 + ... + 22126.

It is an arithmetic number, because the mean of its divisors is an integer number (17130960).

Almost surely, 2^238355923 is an apocalyptic number.

238355923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

238355923 is a deficient number, since it is larger than the sum of its proper divisors (35739437).

238355923 is a wasteful number, since it uses less digits than its factorization.

238355923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18618.

The product of its digits is 194400, while the sum is 40.

The square root of 238355923 is about 15438.7798416844. The cubic root of 238355923 is about 620.0242125473.

The spelling of 238355923 in words is "two hundred thirty-eight million, three hundred fifty-five thousand, nine hundred twenty-three".