312947271 has 144 divisors (see below), whose sum is σ = 634888800. Its totient is φ = 147184128.

The previous prime is 312947251. The next prime is 312947279. The reversal of 312947271 is 172749213.

It is not a de Polignac number, because 312947271 - 2⁷ = 312947143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312947279) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 16470900 + ... + 16470918.

It is an arithmetic number, because the mean of its divisors is an integer number (4408950).

Almost surely, 2^312947271 is an apocalyptic number.

312947271 is an abundant number, since it is smaller than the sum of its proper divisors (321941529).

312947271 is a wasteful number, since it uses less digits than its factorization.

312947271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 59 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 312947271 is about 17690.3157405401. The cubic root of 312947271 is about 678.9280045534.

The spelling of 312947271 in words is "three hundred twelve million, nine hundred forty-seven thousand, two hundred seventy-one".