311234420305 has 16 divisors (see below), whose sum is σ = 375515772480. Its totient is φ = 247634517312.

The previous prime is 311234420249. The next prime is 311234420317. The reversal of 311234420305 is 503024432113.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311234420305 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552186 + ... + 963004.

It is an arithmetic number, because the mean of its divisors is an integer number (23469735780).

Almost surely, 2^311234420305 is an apocalyptic number.

It is an amenable number.

311234420305 is a deficient number, since it is larger than the sum of its proper divisors (64281352175).

311234420305 is a wasteful number, since it uses less digits than its factorization.

311234420305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411648.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 311234420305 its reverse (503024432113), we get a palindrome (814258852418).

The spelling of 311234420305 in words is "three hundred eleven billion, two hundred thirty-four million, four hundred twenty thousand, three hundred five".