231853 has 4 divisors (see below), whose sum is σ = 234208. Its totient is φ = 229500.

The previous prime is 231841. The next prime is 231859. The reversal of 231853 is 358132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231853 - 2⁵ = 231821 is a prime.

It is a Duffinian number.

231853 is a lucky number.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023 + ... + 1228.

It is an arithmetic number, because the mean of its divisors is an integer number (58552).

2²³¹⁸⁵³ is an apocalyptic number.

It is an amenable number.

231853 is a deficient number, since it is larger than the sum of its proper divisors (2355).

231853 is a wasteful number, since it uses less digits than its factorization.

231853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354.

The product of its digits is 720, while the sum is 22.

The square root of 231853 is about 481.5111629028. The cubic root of 231853 is about 61.4333558817.

Adding to 231853 its reverse (358132), we get a palindrome (589985).

The spelling of 231853 in words is "two hundred thirty-one thousand, eight hundred fifty-three".