312220330 has 32 divisors (see below), whose sum is σ = 585506880. Its totient is φ = 119767680.

The previous prime is 312220309. The next prime is 312220333. The reversal of 312220330 is 33022213.

It is not an unprimeable number, because it can be changed into a prime (312220333) 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 15 ways as a sum of consecutive naturals, for example, 17737 + ... + 30643.

It is an arithmetic number, because the mean of its divisors is an integer number (18297090).

Almost surely, 2^312220330 is an apocalyptic number.

312220330 is a deficient number, since it is larger than the sum of its proper divisors (273286550).

312220330 is a wasteful number, since it uses less digits than its factorization.

312220330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13014.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 312220330 is about 17669.7574969211. The cubic root of 312220330 is about 678.4019060819.

Adding to 312220330 its reverse (33022213), we get a palindrome (345242543).

The spelling of 312220330 in words is "three hundred twelve million, two hundred twenty thousand, three hundred thirty".