312420228 has 24 divisors (see below), whose sum is σ = 732802560. Its totient is φ = 103594080.

The previous prime is 312420191. The next prime is 312420257. The reversal of 312420228 is 822024213.

It is a junction number, because it is equal to n+sod(n) for n = 312420198 and 312420207.

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, 65863 + ... + 70446.

It is an arithmetic number, because the mean of its divisors is an integer number (30533440).

Almost surely, 2^312420228 is an apocalyptic number.

It is an amenable number.

312420228 is an abundant number, since it is smaller than the sum of its proper divisors (420382332).

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

312420228 is a wasteful number, since it uses less digits than its factorization.

312420228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136507 (or 136505 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 312420228 is about 17675.4130927682. The cubic root of 312420228 is about 678.5466566955.

The spelling of 312420228 in words is "three hundred twelve million, four hundred twenty thousand, two hundred twenty-eight".