312221234 has 8 divisors (see below), whose sum is σ = 504357420. Its totient is φ = 144102096.

The previous prime is 312221227. The next prime is 312221263. The reversal of 312221234 is 432122213.

It can be written as a sum of positive squares in 2 ways, for example, as 306145009 + 6076225 = 17497^2 + 2465^2 .

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, 6004229 + ... + 6004280.

Almost surely, 2^312221234 is an apocalyptic number.

312221234 is a deficient number, since it is larger than the sum of its proper divisors (192136186).

312221234 is a wasteful number, since it uses less digits than its factorization.

312221234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12008524.

The product of its digits is 576, while the sum is 20.

The square root of 312221234 is about 17669.7830773329. The cubic root of 312221234 is about 678.4025608276.

Adding to 312221234 its reverse (432122213), we get a palindrome (744343447).

The spelling of 312221234 in words is "three hundred twelve million, two hundred twenty-one thousand, two hundred thirty-four".