312403012 has 6 divisors (see below), whose sum is σ = 546705278. Its totient is φ = 156201504.

The previous prime is 312403009. The next prime is 312403079. The reversal of 312403012 is 210304213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 308142916 + 4260096 = 17554^2 + 2064^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39050373 + ... + 39050380.

Almost surely, 2^312403012 is an apocalyptic number.

It is an amenable number.

312403012 is a deficient number, since it is larger than the sum of its proper divisors (234302266).

312403012 is a wasteful number, since it uses less digits than its factorization.

312403012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78100757 (or 78100755 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312403012 is about 17674.9260818822. The cubic root of 312403012 is about 678.5341926350.

Adding to 312403012 its reverse (210304213), we get a palindrome (522707225).

The spelling of 312403012 in words is "three hundred twelve million, four hundred three thousand, twelve".