231243230 has 16 divisors (see below), whose sum is σ = 418733280. Its totient is φ = 91942752.

The previous prime is 231243223. The next prime is 231243263. The reversal of 231243230 is 32342132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67565 + ... + 70904.

It is an arithmetic number, because the mean of its divisors is an integer number (26170830).

Almost surely, 2^231243230 is an apocalyptic number.

231243230 is a deficient number, since it is larger than the sum of its proper divisors (187490050).

231243230 is a wasteful number, since it uses less digits than its factorization.

231243230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138643.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 231243230 is about 15206.6837278876. The cubic root of 231243230 is about 613.7945232294.

Adding to 231243230 its reverse (32342132), we get a palindrome (263585362).

The spelling of 231243230 in words is "two hundred thirty-one million, two hundred forty-three thousand, two hundred thirty".