311244030030243 has 4 divisors (see below), whose sum is σ = 414992040040328. Its totient is φ = 207496020020160.

The previous prime is 311244030030229. The next prime is 311244030030251. The reversal of 311244030030243 is 342030030442113.

It is a happy number.

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

It is not a de Polignac number, because 311244030030243 - 2⁶ = 311244030030179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311244030030243.

It is not an unprimeable number, because it can be changed into a prime (311244030030293) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 51874005005038 + ... + 51874005005043.

It is an arithmetic number, because the mean of its divisors is an integer number (103748010010082).

Almost surely, 2^{311244030030243} is an apocalyptic number.

311244030030243 is a deficient number, since it is larger than the sum of its proper divisors (103748010010085).

311244030030243 is a wasteful number, since it uses less digits than its factorization.

311244030030243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103748010010084.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 311244030030243 its reverse (342030030442113), we get a palindrome (653274060472356).

The spelling of 311244030030243 in words is "three hundred eleven trillion, two hundred forty-four billion, thirty million, thirty thousand, two hundred forty-three".