232381 has 2 divisors, whose sum is σ = 232382. Its totient is φ = 232380.

The previous prime is 232367. The next prime is 232391. The reversal of 232381 is 183232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136900 + 95481 = 370^2 + 309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232381 is a prime.

It is a super-2 number, since 2×232381² = 108001858322, which contains 22 as substring.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116190 + 116191.

It is an arithmetic number, because the mean of its divisors is an integer number (116191).

2²³²³⁸¹ is an apocalyptic number.

It is an amenable number.

232381 is a deficient number, since it is larger than the sum of its proper divisors (1).

232381 is an equidigital number, since it uses as much as digits as its factorization.

232381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 232381 is about 482.0591250044. The cubic root of 232381 is about 61.4799546895.

The spelling of 232381 in words is "two hundred thirty-two thousand, three hundred eighty-one".