231312230 has 16 divisors (see below), whose sum is σ = 416679120. Its totient is φ = 92454432.

The previous prime is 231312209. The next prime is 231312233. The reversal of 231312230 is 32213132.

It is a junction number, because it is equal to n+sod(n) for n = 231312199 and 231312208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231312233) 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, 6197 + ... + 22383.

It is an arithmetic number, because the mean of its divisors is an integer number (26042445).

Almost surely, 2^231312230 is an apocalyptic number.

231312230 is a deficient number, since it is larger than the sum of its proper divisors (185366890).

231312230 is a wasteful number, since it uses less digits than its factorization.

231312230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17623.

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

The square root of 231312230 is about 15208.9522979067. The cubic root of 231312230 is about 613.8555666170.

Adding to 231312230 its reverse (32213132), we get a palindrome (263525362).

The spelling of 231312230 in words is "two hundred thirty-one million, three hundred twelve thousand, two hundred thirty".