231210312 has 32 divisors (see below), whose sum is σ = 591470880. Its totient is φ = 75277440.

The previous prime is 231210277. The next prime is 231210323. The reversal of 231210312 is 213012132.

It is a junction number, because it is equal to n+sod(n) for n = 231210291 and 231210300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110989 + ... + 113052.

It is an arithmetic number, because the mean of its divisors is an integer number (18483465).

Almost surely, 2^231210312 is an apocalyptic number.

It is an amenable number.

231210312 is an abundant number, since it is smaller than the sum of its proper divisors (360260568).

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

231210312 is a wasteful number, since it uses less digits than its factorization.

231210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224093 (or 224089 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231210312 is about 15205.6013363497. The cubic root of 231210312 is about 613.7653968316.

Adding to 231210312 its reverse (213012132), we get a palindrome (444222444).

The spelling of 231210312 in words is "two hundred thirty-one million, two hundred ten thousand, three hundred twelve".