312657843908 has 12 divisors (see below), whose sum is σ = 547666928172. Its totient is φ = 156181578720.

The previous prime is 312657843893. The next prime is 312657843929. The reversal of 312657843908 is 809348756213.

It can be written as a sum of positive squares in 2 ways, for example, as 94875088324 + 217782755584 = 308018^2 + 466672^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36831035 + ... + 36839522.

It is an arithmetic number, because the mean of its divisors is an integer number (45638910681).

It is a 1-persistent number, because it is pandigital, but 2⋅312657843908 = 625315687816 is not.

Almost surely, 2^312657843908 is an apocalyptic number.

It is an amenable number.

312657843908 is a deficient number, since it is larger than the sum of its proper divisors (235009084264).

312657843908 is a wasteful number, since it uses less digits than its factorization.

312657843908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73671622 (or 73671620 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 312657843908 in words is "three hundred twelve billion, six hundred fifty-seven million, eight hundred forty-three thousand, nine hundred eight".