312748 has 12 divisors (see below), whose sum is σ = 560952. Its totient is φ = 152480.

The previous prime is 312743. The next prime is 312757. The reversal of 312748 is 847213.

It is a super-2 number, since 2×312748² = 195622623008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312743) by changing a digit.

312748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790 + ... + 1117.

It is an arithmetic number, because the mean of its divisors is an integer number (46746).

2³¹²⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

312748 is a deficient number, since it is larger than the sum of its proper divisors (248204).

312748 is a wasteful number, since it uses less digits than its factorization.

312748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1950 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 312748 is about 559.2387683271. The cubic root of 312748 is about 67.8783870167.

The spelling of 312748 in words is "three hundred twelve thousand, seven hundred forty-eight".