312644228 has 48 divisors (see below), whose sum is σ = 619375680. Its totient is φ = 137096064.

The previous prime is 312644209. The next prime is 312644231. The reversal of 312644228 is 822446213.

It is a junction number, because it is equal to n+sod(n) for n = 312644194 and 312644203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80843 + ... + 84621.

It is an arithmetic number, because the mean of its divisors is an integer number (12903660).

Almost surely, 2^312644228 is an apocalyptic number.

It is an amenable number.

312644228 is a deficient number, since it is larger than the sum of its proper divisors (306731452).

312644228 is a wasteful number, since it uses less digits than its factorization.

312644228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876 (or 3874 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 312644228 is about 17681.7484429567. The cubic root of 312644228 is about 678.7087867649.

The spelling of 312644228 in words is "three hundred twelve million, six hundred forty-four thousand, two hundred twenty-eight".