312208812 has 72 divisors (see below), whose sum is σ = 836780672. Its totient is φ = 97977600.

The previous prime is 312208801. The next prime is 312208823. The reversal of 312208812 is 218802213.

It is an interprime number because it is at equal distance from previous prime (312208801) and next prime (312208823).

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 23 ways as a sum of consecutive naturals, for example, 37512 + ... + 45072.

Almost surely, 2^312208812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312208812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418390336).

312208812 is an abundant number, since it is smaller than the sum of its proper divisors (524571860).

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

312208812 is a wasteful number, since it uses less digits than its factorization.

312208812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639 (or 7634 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 312208812 is about 17669.4315698044. The cubic root of 312208812 is about 678.3935637582.

The spelling of 312208812 in words is "three hundred twelve million, two hundred eight thousand, eight hundred twelve".