311000312 has 32 divisors (see below), whose sum is σ = 705633120. Its totient is φ = 125445120.

The previous prime is 311000309. The next prime is 311000351. The reversal of 311000312 is 213000113.

It is a junction number, because it is equal to n+sod(n) for n = 311000293 and 311000302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162389 + ... + 164292.

It is an arithmetic number, because the mean of its divisors is an integer number (22051035).

Almost surely, 2^311000312 is an apocalyptic number.

It is an amenable number.

311000312 is an abundant number, since it is smaller than the sum of its proper divisors (394632808).

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

311000312 is a wasteful number, since it uses less digits than its factorization.

311000312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326711 (or 326707 counting only the distinct ones).

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

The square root of 311000312 is about 17635.2009344946. The cubic root of 311000312 is about 677.5171217924.

Adding to 311000312 its reverse (213000113), we get a palindrome (524000425).

The spelling of 311000312 in words is "three hundred eleven million, three hundred twelve", and thus it is an aban number.