231130 has 16 divisors (see below), whose sum is σ = 430920. Its totient is φ = 89152.

The previous prime is 231109. The next prime is 231131. The reversal of 231130 is 31132.

It can be written as a sum of positive squares in 4 ways, for example, as 185761 + 45369 = 431^2 + 213^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109 + ... + 688.

2²³¹¹³⁰ is an apocalyptic number.

231130 is a deficient number, since it is larger than the sum of its proper divisors (199790).

231130 is a wasteful number, since it uses less digits than its factorization.

231130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 231130 is about 480.7598152924. The cubic root of 231130 is about 61.3694323827.

Adding to 231130 its reverse (31132), we get a palindrome (262262).

It can be divided in two parts, 231 and 130, that added together give a square (361 = 19²).

The spelling of 231130 in words is "two hundred thirty-one thousand, one hundred thirty".