231841 has 2 divisors, whose sum is σ = 231842. Its totient is φ = 231840.

The previous prime is 231839. The next prime is 231859. The reversal of 231841 is 148132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221841 + 10000 = 471^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 231841 - 2¹ = 231839 is a prime.

Together with 231839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115920 + 115921.

It is an arithmetic number, because the mean of its divisors is an integer number (115921).

2²³¹⁸⁴¹ is an apocalyptic number.

It is an amenable number.

231841 is a deficient number, since it is larger than the sum of its proper divisors (1).

231841 is an equidigital number, since it uses as much as digits as its factorization.

231841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 231841 is about 481.4987019713. The cubic root of 231841 is about 61.4322959961.

Adding to 231841 its reverse (148132), we get a palindrome (379973).

The spelling of 231841 in words is "two hundred thirty-one thousand, eight hundred forty-one".