231030212 has 24 divisors (see below), whose sum is σ = 463270080. Its totient is φ = 98753760.

The previous prime is 231030209. The next prime is 231030281. The reversal of 231030212 is 212030132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 287 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (19302920).

Almost surely, 2^231030212 is an apocalyptic number.

It is an amenable number.

231030212 is an abundant number, since it is smaller than the sum of its proper divisors (232239868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231030212 is a wasteful number, since it uses less digits than its factorization.

231030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21611 (or 21609 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231030212 is about 15199.6780229056. The cubic root of 231030212 is about 613.6059923760.

Adding to 231030212 its reverse (212030132), we get a palindrome (443060344).

The spelling of 231030212 in words is "two hundred thirty-one million, thirty thousand, two hundred twelve".