311530443112542 has 16 divisors (see below), whose sum is σ = 623579671323792. Its totient is φ = 103757016854400.

The previous prime is 311530443112529. The next prime is 311530443112583. The reversal of 311530443112542 is 245211344035113.

It is a self number, because there is not a number n which added to its sum of digits gives 311530443112542.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21616037973 + ... + 21616052384.

It is an arithmetic number, because the mean of its divisors is an integer number (38973729457737).

Almost surely, 2^{311530443112542} is an apocalyptic number.

311530443112542 is an abundant number, since it is smaller than the sum of its proper divisors (312049228211250).

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

311530443112542 is a wasteful number, since it uses less digits than its factorization.

311530443112542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43232091563.

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 311530443112542 its reverse (245211344035113), we get a palindrome (556741787147655).

The spelling of 311530443112542 in words is "three hundred eleven trillion, five hundred thirty billion, four hundred forty-three million, one hundred twelve thousand, five hundred forty-two".