311043012 has 24 divisors (see below), whose sum is σ = 829448256. Its totient is φ = 88869408.

The previous prime is 311042971. The next prime is 311043049. The reversal of 311043012 is 210340113.

311043012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 311042982 and 311043000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851363 + ... + 1851530.

It is an arithmetic number, because the mean of its divisors is an integer number (34560344).

Almost surely, 2^311043012 is an apocalyptic number.

It is an amenable number.

311043012 is an abundant number, since it is smaller than the sum of its proper divisors (518405244).

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

311043012 is a wasteful number, since it uses less digits than its factorization.

311043012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702907 (or 3702905 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 311043012 is about 17636.4115397662. The cubic root of 311043012 is about 677.5481278247.

Adding to 311043012 its reverse (210340113), we get a palindrome (521383125).

The spelling of 311043012 in words is "three hundred eleven million, forty-three thousand, twelve".