311053213443 has 8 divisors (see below), whose sum is σ = 473985849088. Its totient is φ = 177744693384.

The previous prime is 311053213439. The next prime is 311053213447. The reversal of 311053213443 is 344312350113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (311053213439) and next prime (311053213447).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311053213443 - 2² = 311053213439 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 311053213443.

It is not an unprimeable number, because it can be changed into a prime (311053213447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7406028871 + ... + 7406028912.

It is an arithmetic number, because the mean of its divisors is an integer number (59248231136).

Almost surely, 2^311053213443 is an apocalyptic number.

311053213443 is a deficient number, since it is larger than the sum of its proper divisors (162932635645).

311053213443 is a wasteful number, since it uses less digits than its factorization.

311053213443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14812057793.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 311053213443 its reverse (344312350113), we get a palindrome (655365563556).

The spelling of 311053213443 in words is "three hundred eleven billion, fifty-three million, two hundred thirteen thousand, four hundred forty-three".