231455 has 16 divisors (see below), whose sum is σ = 336960. Its totient is φ = 148992.

The previous prime is 231443. The next prime is 231461. The reversal of 231455 is 554132.

231455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231455 - 2¹⁰ = 230431 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231455.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401 + ... + 789.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2²³¹⁴⁵⁵ is an apocalyptic number.

231455 is a deficient number, since it is larger than the sum of its proper divisors (105505).

231455 is a wasteful number, since it uses less digits than its factorization.

231455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its digits is 600, while the sum is 20.

The square root of 231455 is about 481.0977031747. The cubic root of 231455 is about 61.3981834814.

Adding to 231455 its reverse (554132), we get a palindrome (785587).

It can be divided in two parts, 231 and 455, that added together give a palindrome (686).

The spelling of 231455 in words is "two hundred thirty-one thousand, four hundred fifty-five".