311441 has 4 divisors (see below), whose sum is σ = 335412. Its totient is φ = 287472.

The previous prime is 311419. The next prime is 311447. The reversal of 311441 is 144113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144113 = 211 ⋅683.

It can be written as a sum of positive squares in 2 ways, for example, as 148225 + 163216 = 385^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 311441 - 2¹⁸ = 49297 is a prime.

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 311441.

It is not an unprimeable number, because it can be changed into a prime (311447) 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, 11966 + ... + 11991.

It is an arithmetic number, because the mean of its divisors is an integer number (83853).

2³¹¹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

311441 is a deficient number, since it is larger than the sum of its proper divisors (23971).

311441 is a wasteful number, since it uses less digits than its factorization.

311441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23970.

The product of its digits is 48, while the sum is 14.

The square root of 311441 is about 558.0689921506. The cubic root of 311441 is about 67.7836985083.

Adding to 311441 its reverse (144113), we get a palindrome (455554).

The spelling of 311441 in words is "three hundred eleven thousand, four hundred forty-one", and thus it is an iban number.