238117543 has 4 divisors (see below), whose sum is σ = 238219200. Its totient is φ = 238015888.

The previous prime is 238117513. The next prime is 238117547. The reversal of 238117543 is 345711832.

238117543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 238117543 - 2⁵ = 238117511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238117499 and 238117508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238117547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47230 + ... + 52027.

It is an arithmetic number, because the mean of its divisors is an integer number (59554800).

Almost surely, 2^238117543 is an apocalyptic number.

238117543 is a deficient number, since it is larger than the sum of its proper divisors (101657).

238117543 is an equidigital number, since it uses as much as digits as its factorization.

238117543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101656.

The product of its digits is 20160, while the sum is 34.

The square root of 238117543 is about 15431.0577408031. The cubic root of 238117543 is about 619.8174479892.

The spelling of 238117543 in words is "two hundred thirty-eight million, one hundred seventeen thousand, five hundred forty-three".