312215214 has 16 divisors (see below), whose sum is σ = 624919680. Its totient is φ = 103990200.

The previous prime is 312215203. The next prime is 312215227. The reversal of 312215214 is 412512213.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 11812 + ... + 27639.

It is an arithmetic number, because the mean of its divisors is an integer number (39057480).

Almost surely, 2^312215214 is an apocalyptic number.

312215214 is an abundant number, since it is smaller than the sum of its proper divisors (312704466).

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

312215214 is a wasteful number, since it uses less digits than its factorization.

312215214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40775.

The product of its digits is 480, while the sum is 21.

The square root of 312215214 is about 17669.6127292026. The cubic root of 312215214 is about 678.3982006611.

Adding to 312215214 its reverse (412512213), we get a palindrome (724727427).

It can be divided in two parts, 3122 and 15214, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 312215214 in words is "three hundred twelve million, two hundred fifteen thousand, two hundred fourteen".