312851 has 16 divisors (see below), whose sum is σ = 414720. Its totient is φ = 228480.

The previous prime is 312841. The next prime is 312857. The reversal of 312851 is 158213.

It is not a de Polignac number, because 312851 - 2¹⁰ = 311827 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 312851.

It is not an unprimeable number, because it can be changed into a prime (312857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2³¹²⁸⁵¹ is an apocalyptic number.

312851 is a deficient number, since it is larger than the sum of its proper divisors (101869).

312851 is a wasteful number, since it uses less digits than its factorization.

312851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274.

The product of its digits is 240, while the sum is 20.

The square root of 312851 is about 559.3308502130. The cubic root of 312851 is about 67.8858378573.

It can be divided in two parts, 31 and 2851, that added together give a palindrome (2882).

The spelling of 312851 in words is "three hundred twelve thousand, eight hundred fifty-one".