312545 has 8 divisors (see below), whose sum is σ = 397224. Its totient is φ = 235264.

The previous prime is 312527. The next prime is 312551. The reversal of 312545 is 545213.

It can be written as a sum of positive squares in 4 ways, for example, as 108241 + 204304 = 329^2 + 452^2 .

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 312545 - 2⁸ = 312289 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754 + ... + 1923.

It is an arithmetic number, because the mean of its divisors is an integer number (49653).

2³¹²⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

312545 is a deficient number, since it is larger than the sum of its proper divisors (84679).

312545 is a wasteful number, since it uses less digits than its factorization.

312545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699.

The product of its digits is 600, while the sum is 20.

The square root of 312545 is about 559.0572421497. The cubic root of 312545 is about 67.8636975597.

Adding to 312545 its reverse (545213), we get a palindrome (857758).

It can be divided in two parts, 3125 and 45, that multiplied together give a square (140625 = 375²).

The spelling of 312545 in words is "three hundred twelve thousand, five hundred forty-five".