238305113 has 4 divisors (see below), whose sum is σ = 240124368. Its totient is φ = 236485860.

The previous prime is 238305107. The next prime is 238305127. The reversal of 238305113 is 311503832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238305113 - 2¹⁰ = 238304089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (238305103) 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, 909431 + ... + 909692.

It is an arithmetic number, because the mean of its divisors is an integer number (60031092).

Almost surely, 2^238305113 is an apocalyptic number.

It is an amenable number.

238305113 is a deficient number, since it is larger than the sum of its proper divisors (1819255).

238305113 is a wasteful number, since it uses less digits than its factorization.

238305113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819254.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 238305113 is about 15437.1342223873. The cubic root of 238305113 is about 619.9801528506.

Adding to 238305113 its reverse (311503832), we get a palindrome (549808945).

The spelling of 238305113 in words is "two hundred thirty-eight million, three hundred five thousand, one hundred thirteen".