235381 has 4 divisors (see below), whose sum is σ = 241164. Its totient is φ = 229600.

The previous prime is 235369. The next prime is 235397. The reversal of 235381 is 183532.

235381 = T₈₆ + T₈₇ + ... + T₁₂₆.

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 54756 + 180625 = 234^2 + 425^2 .

It is not a de Polignac number, because 235381 - 2⁵ = 235349 is a prime.

It is a super-2 number, since 2×235381² = 110808430322, which contains 22 as substring.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235181) 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, 2830 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (60291).

2²³⁵³⁸¹ is an apocalyptic number.

It is an amenable number.

235381 is a deficient number, since it is larger than the sum of its proper divisors (5783).

235381 is an equidigital number, since it uses as much as digits as its factorization.

235381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782.

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

The square root of 235381 is about 485.1607980866. The cubic root of 235381 is about 61.7433896118.

It can be divided in two parts, 235 and 381, that added together give a palindrome (616).

The spelling of 235381 in words is "two hundred thirty-five thousand, three hundred eighty-one".