312223420432442 has 8 divisors (see below), whose sum is σ = 484484617912500. Its totient is φ = 150728547794944.

The previous prime is 312223420432439. The next prime is 312223420432447. The reversal of 312223420432442 is 244234024322213.

It can be written as a sum of positive squares in 2 ways, for example, as 301743963066841 + 10479457365601 = 17370779^2 + 3237199^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 312223420432396 and 312223420432405.

It is not an unprimeable number, because it can be changed into a prime (312223420432447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2691581210567 + ... + 2691581210682.

Almost surely, 2^{312223420432442} is an apocalyptic number.

312223420432442 is a deficient number, since it is larger than the sum of its proper divisors (172261197480058).

312223420432442 is a wasteful number, since it uses less digits than its factorization.

312223420432442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5383162421280.

The product of its (nonzero) digits is 442368, while the sum is 38.

Adding to 312223420432442 its reverse (244234024322213), we get a palindrome (556457444754655).

The spelling of 312223420432442 in words is "three hundred twelve trillion, two hundred twenty-three billion, four hundred twenty million, four hundred thirty-two thousand, four hundred forty-two".