231730 has 8 divisors (see below), whose sum is σ = 417132. Its totient is φ = 92688.

The previous prime is 231719. The next prime is 231779. The reversal of 231730 is 37132.

231730 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 2 ways, for example, as 194481 + 37249 = 441^2 + 193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11577 + ... + 11596.

2²³¹⁷³⁰ is an apocalyptic number.

231730 is a deficient number, since it is larger than the sum of its proper divisors (185402).

231730 is a wasteful number, since it uses less digits than its factorization.

231730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23180.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 231730 is about 481.3834230632. The cubic root of 231730 is about 61.4224903198.

Adding to 231730 its reverse (37132), we get a palindrome (268862).

It can be divided in two parts, 231 and 730, that added together give a square (961 = 31²).

The spelling of 231730 in words is "two hundred thirty-one thousand, seven hundred thirty".