311431020334342 has 4 divisors (see below), whose sum is σ = 467146530501516. Its totient is φ = 155715510167170.

The previous prime is 311431020334331. The next prime is 311431020334367. The reversal of 311431020334342 is 243433020134113.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 311431020334298 and 311431020334307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77857755083584 + ... + 77857755083587.

It is an arithmetic number, because the mean of its divisors is an integer number (116786632625379).

Almost surely, 2^{311431020334342} is an apocalyptic number.

311431020334342 is a deficient number, since it is larger than the sum of its proper divisors (155715510167174).

311431020334342 is a wasteful number, since it uses less digits than its factorization.

311431020334342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155715510167173.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 311431020334342 its reverse (243433020134113), we get a palindrome (554864040468455).

The spelling of 311431020334342 in words is "three hundred eleven trillion, four hundred thirty-one billion, twenty million, three hundred thirty-four thousand, three hundred forty-two".