312220312322 has 4 divisors (see below), whose sum is σ = 468330468486. Its totient is φ = 156110156160.

The previous prime is 312220312309. The next prime is 312220312331. The reversal of 312220312322 is 223213022213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 244568822521 + 67651489801 = 494539^2 + 260099^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78055078079 + ... + 78055078082.

Almost surely, 2^312220312322 is an apocalyptic number.

312220312322 is a deficient number, since it is larger than the sum of its proper divisors (156110156164).

312220312322 is a wasteful number, since it uses less digits than its factorization.

312220312322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156110156163.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 312220312322 its reverse (223213022213), we get a palindrome (535433334535).

The spelling of 312220312322 in words is "three hundred twelve billion, two hundred twenty million, three hundred twelve thousand, three hundred twenty-two".