231849 has 16 divisors (see below), whose sum is σ = 355840. Its totient is φ = 149040.

The previous prime is 231841. The next prime is 231859. The reversal of 231849 is 948132.

231849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231849 - 2³ = 231841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231841) 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, 699 + ... + 975.

It is an arithmetic number, because the mean of its divisors is an integer number (22240).

2²³¹⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

231849 is a deficient number, since it is larger than the sum of its proper divisors (123991).

231849 is a wasteful number, since it uses less digits than its factorization.

231849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 231849 is about 481.5070092948. The cubic root of 231849 is about 61.4330025905.

The spelling of 231849 in words is "two hundred thirty-one thousand, eight hundred forty-nine".