312130235252442 has 8 divisors (see below), whose sum is σ = 624260470504896. Its totient is φ = 104043411750812.

The previous prime is 312130235252359. The next prime is 312130235252461. The reversal of 312130235252442 is 244252532031213.

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

312130235252442 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 312130235252442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26010852937698 + ... + 26010852937709.

It is an arithmetic number, because the mean of its divisors is an integer number (78032558813112).

Almost surely, 2^{312130235252442} is an apocalyptic number.

312130235252442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312130235252442 is a wasteful number, since it uses less digits than its factorization.

312130235252442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52021705875412.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 312130235252442 its reverse (244252532031213), we get a palindrome (556382767283655).

The spelling of 312130235252442 in words is "three hundred twelve trillion, one hundred thirty billion, two hundred thirty-five million, two hundred fifty-two thousand, four hundred forty-two".