312403340400442 has 16 divisors (see below), whose sum is σ = 488998013394240. Its totient is φ = 149404526821792.

The previous prime is 312403340400427. The next prime is 312403340400517. The reversal of 312403340400442 is 244004043304213.

It is a junction number, because it is equal to n+sod(n) for n = 312403340400398 and 312403340400407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129849892 + ... + 132233887.

It is an arithmetic number, because the mean of its divisors is an integer number (30562375837140).

Almost surely, 2^{312403340400442} is an apocalyptic number.

312403340400442 is a deficient number, since it is larger than the sum of its proper divisors (176594672993798).

312403340400442 is a wasteful number, since it uses less digits than its factorization.

312403340400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262109717.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 312403340400442 its reverse (244004043304213), we get a palindrome (556407383704655).

The spelling of 312403340400442 in words is "three hundred twelve trillion, four hundred three billion, three hundred forty million, four hundred thousand, four hundred forty-two".