231223130 has 8 divisors (see below), whose sum is σ = 416201652. Its totient is φ = 92489248.

The previous prime is 231223121. The next prime is 231223133. The reversal of 231223130 is 31322132.

It can be written as a sum of positive squares in 2 ways, for example, as 188595289 + 42627841 = 13733^2 + 6529^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 231223099 and 231223108.

It is not an unprimeable number, because it can be changed into a prime (231223133) 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, 11561147 + ... + 11561166.

Almost surely, 2^231223130 is an apocalyptic number.

231223130 is a deficient number, since it is larger than the sum of its proper divisors (184978522).

231223130 is a wasteful number, since it uses less digits than its factorization.

231223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23122320.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231223130 is about 15206.0228199224. The cubic root of 231223130 is about 613.7767387413.

Adding to 231223130 its reverse (31322132), we get a palindrome (262545262).

The spelling of 231223130 in words is "two hundred thirty-one million, two hundred twenty-three thousand, one hundred thirty".