312971845 has 8 divisors (see below), whose sum is σ = 384300576. Its totient is φ = 244554576.

The previous prime is 312971801. The next prime is 312971903. The reversal of 312971845 is 548179213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312971845 - 2¹³ = 312963653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312971798 and 312971807.

It is a congruent number.

It is an unprimeable number.

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, 727627 + ... + 728056.

It is an arithmetic number, because the mean of its divisors is an integer number (48037572).

Almost surely, 2^312971845 is an apocalyptic number.

It is an amenable number.

312971845 is a deficient number, since it is larger than the sum of its proper divisors (71328731).

312971845 is a wasteful number, since it uses less digits than its factorization.

312971845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455731.

The product of its digits is 60480, while the sum is 40.

The square root of 312971845 is about 17691.0102877139. The cubic root of 312971845 is about 678.9457748954.

The spelling of 312971845 in words is "three hundred twelve million, nine hundred seventy-one thousand, eight hundred forty-five".