312404120311242 has 32 divisors (see below), whose sum is σ = 630731879573184. Its totient is φ = 103147693827200.

The previous prime is 312404120311187. The next prime is 312404120311271. The reversal of 312404120311242 is 242113021404213.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 27720309 + ... + 37325912.

It is an arithmetic number, because the mean of its divisors is an integer number (19710371236662).

Almost surely, 2^{312404120311242} is an apocalyptic number.

312404120311242 is an abundant number, since it is smaller than the sum of its proper divisors (318327759261942).

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

312404120311242 is a wasteful number, since it uses less digits than its factorization.

312404120311242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65053814.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 312404120311242 its reverse (242113021404213), we get a palindrome (554517141715455).

The spelling of 312404120311242 in words is "three hundred twelve trillion, four hundred four billion, one hundred twenty million, three hundred eleven thousand, two hundred forty-two".