312890143242 has 8 divisors (see below), whose sum is σ = 625780286496. Its totient is φ = 104296714412.

The previous prime is 312890143219. The next prime is 312890143259. The reversal of 312890143242 is 242341098213.

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

312890143242 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 312890143242.

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 3 ways as a sum of consecutive naturals, for example, 26074178598 + ... + 26074178609.

It is an arithmetic number, because the mean of its divisors is an integer number (78222535812).

Almost surely, 2^312890143242 is an apocalyptic number.

312890143242 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.

312890143242 is a wasteful number, since it uses less digits than its factorization.

312890143242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52148357212.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 312890143242 in words is "three hundred twelve billion, eight hundred ninety million, one hundred forty-three thousand, two hundred forty-two".