312231012 has 24 divisors (see below), whose sum is σ = 748230336. Its totient is φ = 101263968.

The previous prime is 312230987. The next prime is 312231019. The reversal of 312231012 is 210132213.

It is a junction number, because it is equal to n+sod(n) for n = 312230982 and 312231000.

It is not an unprimeable number, because it can be changed into a prime (312231019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351168 + ... + 352055.

It is an arithmetic number, because the mean of its divisors is an integer number (31176264).

Almost surely, 2^312231012 is an apocalyptic number.

It is an amenable number.

312231012 is an abundant number, since it is smaller than the sum of its proper divisors (435999324).

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

312231012 is a wasteful number, since it uses less digits than its factorization.

312231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703267 (or 703265 counting only the distinct ones).

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

The square root of 312231012 is about 17670.0597622079. The cubic root of 312231012 is about 678.4096427194.

Adding to 312231012 its reverse (210132213), we get a palindrome (522363225).

The spelling of 312231012 in words is "three hundred twelve million, two hundred thirty-one thousand, twelve".