312547 has 8 divisors (see below), whose sum is σ = 331776. Its totient is φ = 293832.

The previous prime is 312527. The next prime is 312551. The reversal of 312547 is 745213.

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 312547 - 2¹⁵ = 279779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398 + ... + 2524.

It is an arithmetic number, because the mean of its divisors is an integer number (41472).

2³¹²⁵⁴⁷ is an apocalyptic number.

312547 is a deficient number, since it is larger than the sum of its proper divisors (19229).

312547 is a wasteful number, since it uses less digits than its factorization.

312547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its digits is 840, while the sum is 22.

The square root of 312547 is about 559.0590308724. The cubic root of 312547 is about 67.8638423144.

The spelling of 312547 in words is "three hundred twelve thousand, five hundred forty-seven".