312630066 has 48 divisors (see below), whose sum is σ = 814881600. Its totient is φ = 84621024.

The previous prime is 312630061. The next prime is 312630079. The reversal of 312630066 is 660036213.

It is not an unprimeable number, because it can be changed into a prime (312630061) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 62901 + ... + 67688.

It is an arithmetic number, because the mean of its divisors is an integer number (16976700).

Almost surely, 2^312630066 is an apocalyptic number.

312630066 is an abundant number, since it is smaller than the sum of its proper divisors (502251534).

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

312630066 is a wasteful number, since it uses less digits than its factorization.

312630066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130623 (or 130620 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 312630066 is about 17681.3479689757. The cubic root of 312630066 is about 678.6985386744.

Adding to 312630066 its reverse (660036213), we get a palindrome (972666279).

The spelling of 312630066 in words is "three hundred twelve million, six hundred thirty thousand, sixty-six".