231441 has 16 divisors (see below), whose sum is σ = 359424. Its totient is φ = 129744.

The previous prime is 231433. The next prime is 231443. The reversal of 231441 is 144132.

It is not a de Polignac number, because 231441 - 2³ = 231433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2110 + ... + 2216.

It is an arithmetic number, because the mean of its divisors is an integer number (22464).

2²³¹⁴⁴¹ is an apocalyptic number.

231441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

231441 is a deficient number, since it is larger than the sum of its proper divisors (127983).

231441 is a wasteful number, since it uses less digits than its factorization.

231441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220.

The product of its digits is 96, while the sum is 15.

The square root of 231441 is about 481.0831528956. The cubic root of 231441 is about 61.3969455274.

Adding to 231441 its reverse (144132), we get a palindrome (375573).

The spelling of 231441 in words is "two hundred thirty-one thousand, four hundred forty-one".