312668442 has 48 divisors (see below), whose sum is σ = 690161472. Its totient is φ = 102286080.

The previous prime is 312668413. The next prime is 312668443. The reversal of 312668442 is 244866213.

It is a junction number, because it is equal to n+sod(n) for n = 312668397 and 312668406.

It is not an unprimeable number, because it can be changed into a prime (312668443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228043 + ... + 229409.

It is an arithmetic number, because the mean of its divisors is an integer number (14378364).

Almost surely, 2^312668442 is an apocalyptic number.

312668442 is an abundant number, since it is smaller than the sum of its proper divisors (377493030).

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

312668442 is a wasteful number, since it uses less digits than its factorization.

312668442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603 (or 1600 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 312668442 is about 17682.4331470530. The cubic root of 312668442 is about 678.7263080973.

The spelling of 312668442 in words is "three hundred twelve million, six hundred sixty-eight thousand, four hundred forty-two".