311431020334242 has 16 divisors (see below), whose sum is σ = 622871404574880. Its totient is φ = 103808779460352.

The previous prime is 311431020334177. The next prime is 311431020334243. The reversal of 311431020334242 is 242433020134113.

It is not an unprimeable number, because it can be changed into a prime (311431020334243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389730367 + ... + 390528642.

It is an arithmetic number, because the mean of its divisors is an integer number (38929462785930).

Almost surely, 2^{311431020334242} is an apocalyptic number.

311431020334242 is an abundant number, since it is smaller than the sum of its proper divisors (311440384240638).

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

311431020334242 is a wasteful number, since it uses less digits than its factorization.

311431020334242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780325537.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 311431020334242 its reverse (242433020134113), we get a palindrome (553864040468355).

The spelling of 311431020334242 in words is "three hundred eleven trillion, four hundred thirty-one billion, twenty million, three hundred thirty-four thousand, two hundred forty-two".