238513 has 4 divisors (see below), whose sum is σ = 260208. Its totient is φ = 216820.

The previous prime is 238499. The next prime is 238519. The reversal of 238513 is 315832.

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 238513 - 2⁵ = 238481 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238519) 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, 10831 + ... + 10852.

It is an arithmetic number, because the mean of its divisors is an integer number (65052).

2²³⁸⁵¹³ is an apocalyptic number.

It is an amenable number.

238513 is a deficient number, since it is larger than the sum of its proper divisors (21695).

238513 is a wasteful number, since it uses less digits than its factorization.

238513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21694.

The product of its digits is 720, while the sum is 22.

The square root of 238513 is about 488.3779274292. The cubic root of 238513 is about 62.0160381679.

The spelling of 238513 in words is "two hundred thirty-eight thousand, five hundred thirteen".