312225404642 has 6 divisors (see below), whose sum is σ = 468339292299. Its totient is φ = 156112307210.

The previous prime is 312225404609. The next prime is 312225404669. The reversal of 312225404642 is 246404522213.

It can be written as a sum of positive squares in only one way, i.e., 156112702321 + 156112702321 = 395111^2 + 395111^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=395111.

It is a Duffinian number.

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 in 2 ways as a sum of consecutive naturals, for example, 592667 + ... + 987777.

Almost surely, 2^312225404642 is an apocalyptic number.

312225404642 is a deficient number, since it is larger than the sum of its proper divisors (156113887657).

312225404642 is an frugal number, since it uses more digits than its factorization.

312225404642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790224 (or 395113 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 312225404642 its reverse (246404522213), we get a palindrome (558629926855).

The spelling of 312225404642 in words is "three hundred twelve billion, two hundred twenty-five million, four hundred four thousand, six hundred forty-two".