311030012 has 12 divisors (see below), whose sum is σ = 567968016. Its totient is φ = 148753440.

The previous prime is 311030003. The next prime is 311030063. The reversal of 311030012 is 210030113.

It is a junction number, because it is equal to n+sod(n) for n = 311029975 and 311030002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1690289 + ... + 1690472.

It is an arithmetic number, because the mean of its divisors is an integer number (47330668).

Almost surely, 2^311030012 is an apocalyptic number.

It is an amenable number.

311030012 is a deficient number, since it is larger than the sum of its proper divisors (256938004).

311030012 is a wasteful number, since it uses less digits than its factorization.

311030012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380788 (or 3380786 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 311030012 is about 17636.0429802153. The cubic root of 311030012 is about 677.5386883495.

Adding to 311030012 its reverse (210030113), we get a palindrome (521060125).

The spelling of 311030012 in words is "three hundred eleven million, thirty thousand, twelve".