312163222 has 24 divisors (see below), whose sum is σ = 568379376. Its totient is φ = 127966608.

The previous prime is 312163213. The next prime is 312163223. The reversal of 312163222 is 222361213.

It is a junction number, because it is equal to n+sod(n) for n = 312163193 and 312163202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312163223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66993 + ... + 71500.

It is an arithmetic number, because the mean of its divisors is an integer number (23682474).

Almost surely, 2^312163222 is an apocalyptic number.

312163222 is a deficient number, since it is larger than the sum of its proper divisors (256216154).

312163222 is a wasteful number, since it uses less digits than its factorization.

312163222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138532 (or 138525 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 312163222 is about 17668.1414415892. The cubic root of 312163222 is about 678.3605415554.

The spelling of 312163222 in words is "three hundred twelve million, one hundred sixty-three thousand, two hundred twenty-two".