311853 has 4 divisors (see below), whose sum is σ = 415808. Its totient is φ = 207900.

The previous prime is 311827. The next prime is 311867. The reversal of 311853 is 358113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 311853 - 2⁵ = 311821 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 311853.

It is not an unprimeable number, because it can be changed into a prime (311803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51973 + ... + 51978.

It is an arithmetic number, because the mean of its divisors is an integer number (103952).

2³¹¹⁸⁵³ is an apocalyptic number.

It is an amenable number.

311853 is a deficient number, since it is larger than the sum of its proper divisors (103955).

311853 is a wasteful number, since it uses less digits than its factorization.

311853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103954.

The product of its digits is 360, while the sum is 21.

The square root of 311853 is about 558.4380001397. The cubic root of 311853 is about 67.8135753049.

Adding to 311853 its product of digits (360), we get a palindrome (312213).

Adding to 311853 its reverse (358113), we get a palindrome (669966).

The spelling of 311853 in words is "three hundred eleven thousand, eight hundred fifty-three".