312320012 has 6 divisors (see below), whose sum is σ = 546560028. Its totient is φ = 156160004.

The previous prime is 312319961. The next prime is 312320017. The reversal of 312320012 is 210023213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (312320017) 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 as a sum of consecutive naturals, namely, 39039998 + ... + 39040005.

It is an arithmetic number, because the mean of its divisors is an integer number (91093338).

Almost surely, 2^312320012 is an apocalyptic number.

It is an amenable number.

312320012 is a deficient number, since it is larger than the sum of its proper divisors (234240016).

312320012 is a wasteful number, since it uses less digits than its factorization.

312320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78080007 (or 78080005 counting only the distinct ones).

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

The square root of 312320012 is about 17672.5779670087. The cubic root of 312320012 is about 678.4740957685.

Adding to 312320012 its reverse (210023213), we get a palindrome (522343225).

The spelling of 312320012 in words is "three hundred twelve million, three hundred twenty thousand, twelve".