311331412 has 12 divisors (see below), whose sum is σ = 622662880. Its totient is φ = 133427736.

The previous prime is 311331407. The next prime is 311331437. The reversal of 311331412 is 214133113.

311331412 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 311331412.

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, 5559462 + ... + 5559517.

Almost surely, 2^311331412 is an apocalyptic number.

It is an amenable number.

311331412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

311331412 is a wasteful number, since it uses less digits than its factorization.

311331412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11118990 (or 11118988 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 311331412 is about 17644.5859118314. The cubic root of 311331412 is about 677.7574713456.

Adding to 311331412 its reverse (214133113), we get a palindrome (525464525).

The spelling of 311331412 in words is "three hundred eleven million, three hundred thirty-one thousand, four hundred twelve".