312145 has 8 divisors (see below), whose sum is σ = 377856. Its totient is φ = 247536.

The previous prime is 312121. The next prime is 312161. The reversal of 312145 is 541213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312145 is a prime.

It is a Duffinian number.

312145 is a lucky number.

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, 624 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (47232).

2³¹²¹⁴⁵ is an apocalyptic number.

It is an amenable number.

312145 is a deficient number, since it is larger than the sum of its proper divisors (65711).

312145 is a wasteful number, since it uses less digits than its factorization.

312145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551.

The product of its digits is 120, while the sum is 16.

The square root of 312145 is about 558.6993824947. The cubic root of 312145 is about 67.8347341916.

Adding to 312145 its reverse (541213), we get a palindrome (853358).

The spelling of 312145 in words is "three hundred twelve thousand, one hundred forty-five".