233231 has 2 divisors, whose sum is σ = 233232. Its totient is φ = 233230.

The previous prime is 233221. The next prime is 233239. The reversal of 233231 is 132332.

Adding to 233231 its reverse (132332), we get a palindrome (365563).

It can be divided in two parts, 233 and 231, that added together give a palindrome (464).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 233231 - 2^{10} = 232207 is a prime.

It is a super-2 number, since 2×233231^{2} = 108793398722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233239) 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 as a sum of consecutive naturals, namely, 116615 + 116616.

It is an arithmetic number, because the mean of its divisors is an integer number (116616).

2^{233231} is an apocalyptic number.

233231 is a deficient number, since it is larger than the sum of its proper divisors (1).

233231 is an equidigital number, since it uses as much as digits as its factorization.

233231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 14.

The square root of 233231 is about 482.9399548598. The cubic root of 233231 is about 61.5548236540.

The spelling of 233231 in words is "two hundred thirty-three thousand, two hundred thirty-one".

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