312143243222 has 8 divisors (see below), whose sum is σ = 468250453272. Its totient is φ = 156059758800.

The previous prime is 312143243221. The next prime is 312143243263. The reversal of 312143243222 is 222342341213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312143243221) 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, 5898479 + ... + 5951162.

It is an arithmetic number, because the mean of its divisors is an integer number (58531306659).

Almost surely, 2^312143243222 is an apocalyptic number.

312143243222 is a deficient number, since it is larger than the sum of its proper divisors (156107210050).

312143243222 is a wasteful number, since it uses less digits than its factorization.

312143243222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11862814.

The product of its digits is 13824, while the sum is 29.

Adding to 312143243222 its reverse (222342341213), we get a palindrome (534485584435).

The spelling of 312143243222 in words is "three hundred twelve billion, one hundred forty-three million, two hundred forty-three thousand, two hundred twenty-two".