311102012 has 12 divisors (see below), whose sum is σ = 586307736. Its totient is φ = 143585520.

The previous prime is 311102009. The next prime is 311102027. The reversal of 311102012 is 210201113.

311102012 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 = 311101984 and 311102002.

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, 2991314 + ... + 2991417.

It is an arithmetic number, because the mean of its divisors is an integer number (48858978).

Almost surely, 2^311102012 is an apocalyptic number.

It is an amenable number.

311102012 is a deficient number, since it is larger than the sum of its proper divisors (275205724).

311102012 is a wasteful number, since it uses less digits than its factorization.

311102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982748 (or 5982746 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 311102012 is about 17638.0841363227. The cubic root of 311102012 is about 677.5909652145.

Adding to 311102012 its reverse (210201113), we get a palindrome (521303125).

The spelling of 311102012 in words is "three hundred eleven million, one hundred two thousand, twelve".