312231322 has 8 divisors (see below), whose sum is σ = 504373716. Its totient is φ = 144106752.

The previous prime is 312231251. The next prime is 312231331. The reversal of 312231322 is 223132213.

It can be written as a sum of positive squares in 2 ways, for example, as 264745441 + 47485881 = 16271^2 + 6891^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 312231322.

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, 6004423 + ... + 6004474.

Almost surely, 2^312231322 is an apocalyptic number.

312231322 is a deficient number, since it is larger than the sum of its proper divisors (192142394).

312231322 is a wasteful number, since it uses less digits than its factorization.

312231322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12008912.

The product of its digits is 432, while the sum is 19.

The square root of 312231322 is about 17670.0685341059. The cubic root of 312231322 is about 678.4098672401.

Adding to 312231322 its reverse (223132213), we get a palindrome (535363535).

The spelling of 312231322 in words is "three hundred twelve million, two hundred thirty-one thousand, three hundred twenty-two".