312746478 has 16 divisors (see below), whose sum is σ = 682356096. Its totient is φ = 94771640.

The previous prime is 312746471. The next prime is 312746491. The reversal of 312746478 is 874647213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312746471) 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 7 ways as a sum of consecutive naturals, for example, 2369226 + ... + 2369357.

It is an arithmetic number, because the mean of its divisors is an integer number (42647256).

Almost surely, 2^312746478 is an apocalyptic number.

312746478 is an abundant number, since it is smaller than the sum of its proper divisors (369609618).

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

312746478 is a wasteful number, since it uses less digits than its factorization.

312746478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738599.

The product of its digits is 225792, while the sum is 42.

The square root of 312746478 is about 17684.6396061667. The cubic root of 312746478 is about 678.7827690565.

The spelling of 312746478 in words is "three hundred twelve million, seven hundred forty-six thousand, four hundred seventy-eight".