230381 has 4 divisors (see below), whose sum is σ = 232764. Its totient is φ = 228000.

The previous prime is 230369. The next prime is 230383. The reversal of 230381 is 183032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 188356 + 42025 = 434^2 + 205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230381 is a prime.

It is a super-2 number, since 2×230381² = 106150810322, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (58191).

2²³⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

230381 is a deficient number, since it is larger than the sum of its proper divisors (2383).

230381 is a wasteful number, since it uses less digits than its factorization.

230381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 230381 is about 479.9802079253. The cubic root of 230381 is about 61.3030693740.

The spelling of 230381 in words is "two hundred thirty thousand, three hundred eighty-one".