312220466 has 8 divisors (see below), whose sum is σ = 470341404. Its totient is φ = 155440000.

The previous prime is 312220459. The next prime is 312220471. The reversal of 312220466 is 664022213.

It can be written as a sum of positive squares in 2 ways, for example, as 306075025 + 6145441 = 17495^2 + 2479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 334535 + ... + 335466.

Almost surely, 2^312220466 is an apocalyptic number.

312220466 is a deficient number, since it is larger than the sum of its proper divisors (158120938).

312220466 is a wasteful number, since it uses less digits than its factorization.

312220466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670236.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 312220466 is about 17669.7613453040. The cubic root of 312220466 is about 678.4020045836.

Adding to 312220466 its reverse (664022213), we get a palindrome (976242679).

The spelling of 312220466 in words is "three hundred twelve million, two hundred twenty thousand, four hundred sixty-six".