312143242144442 has 16 divisors (see below), whose sum is σ = 468404464614912. Its totient is φ = 156008430848400.

The previous prime is 312143242144423. The next prime is 312143242144477. The reversal of 312143242144442 is 244441242341213.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 312143242144442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58545143 + ... + 63653909.

It is an arithmetic number, because the mean of its divisors is an integer number (29275279038432).

Almost surely, 2^{312143242144442} is an apocalyptic number.

312143242144442 is a deficient number, since it is larger than the sum of its proper divisors (156261222470470).

312143242144442 is a wasteful number, since it uses less digits than its factorization.

312143242144442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5121133.

The product of its digits is 589824, while the sum is 41.

Adding to 312143242144442 its reverse (244441242341213), we get a palindrome (556584484485655).

The spelling of 312143242144442 in words is "three hundred twelve trillion, one hundred forty-three billion, two hundred forty-two million, one hundred forty-four thousand, four hundred forty-two".