311275 has 6 divisors (see below), whose sum is σ = 386012. Its totient is φ = 249000.

The previous prime is 311237. The next prime is 311279. The reversal of 311275 is 572113.

311275 = T₅₁ + T₅₂ + ... + T₁₂₅.

It is a de Polignac number, because none of the positive numbers 2^k-311275 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6201 + ... + 6250.

2³¹¹²⁷⁵ is an apocalyptic number.

311275 is a deficient number, since it is larger than the sum of its proper divisors (74737).

311275 is a wasteful number, since it uses less digits than its factorization.

311275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12461 (or 12456 counting only the distinct ones).

The product of its digits is 210, while the sum is 19.

The square root of 311275 is about 557.9202451964. The cubic root of 311275 is about 67.7716533230.

Adding to 311275 its reverse (572113), we get a palindrome (883388).

The spelling of 311275 in words is "three hundred eleven thousand, two hundred seventy-five".