312199928 has 16 divisors (see below), whose sum is σ = 586733280. Its totient is φ = 155737728.

The previous prime is 312199919. The next prime is 312199933. The reversal of 312199928 is 829991213.

It is a happy number.

312199928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 41600 + ... + 48527.

It is an arithmetic number, because the mean of its divisors is an integer number (36670830).

Almost surely, 2^312199928 is an apocalyptic number.

It is an amenable number.

312199928 is a deficient number, since it is larger than the sum of its proper divisors (274533352).

312199928 is a wasteful number, since it uses less digits than its factorization.

312199928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90566 (or 90562 counting only the distinct ones).

The product of its digits is 69984, while the sum is 44.

The square root of 312199928 is about 17669.1801733980. The cubic root of 312199928 is about 678.3871290630.

The spelling of 312199928 in words is "three hundred twelve million, one hundred ninety-nine thousand, nine hundred twenty-eight".