311030243242 has 64 divisors (see below), whose sum is σ = 498695823360. Its totient is φ = 145168968384.

The previous prime is 311030243207. The next prime is 311030243281. The reversal of 311030243242 is 242342030113.

It is a super-2 number, since 2×311030243242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395209573 + ... + 395210359.

It is an arithmetic number, because the mean of its divisors is an integer number (7792122240).

Almost surely, 2^311030243242 is an apocalyptic number.

311030243242 is a deficient number, since it is larger than the sum of its proper divisors (187665580118).

311030243242 is a wasteful number, since it uses less digits than its factorization.

311030243242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 311030243242 its reverse (242342030113), we get a palindrome (553372273355).

The spelling of 311030243242 in words is "three hundred eleven billion, thirty million, two hundred forty-three thousand, two hundred forty-two".