239135013 has 24 divisors (see below), whose sum is σ = 379911168. Its totient is φ = 144025632.

The previous prime is 239135011. The next prime is 239135041. The reversal of 239135013 is 310531932.

It is a happy number.

It is not a de Polignac number, because 239135013 - 2¹ = 239135011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239135011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16245 + ... + 27242.

It is an arithmetic number, because the mean of its divisors is an integer number (15829632).

Almost surely, 2^239135013 is an apocalyptic number.

It is an amenable number.

239135013 is a deficient number, since it is larger than the sum of its proper divisors (140776155).

239135013 is a wasteful number, since it uses less digits than its factorization.

239135013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43553 (or 43550 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 239135013 is about 15463.9908497128. The cubic root of 239135013 is about 620.6990147608.

Adding to 239135013 its reverse (310531932), we get a palindrome (549666945).

The spelling of 239135013 in words is "two hundred thirty-nine million, one hundred thirty-five thousand, thirteen".