311461 has 4 divisors (see below), whose sum is σ = 316800. Its totient is φ = 306124.

The previous prime is 311453. The next prime is 311473. The reversal of 311461 is 164113.

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 a cyclic number.

It is not a de Polignac number, because 311461 - 2³ = 311453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2581 + ... + 2698.

It is an arithmetic number, because the mean of its divisors is an integer number (79200).

2³¹¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

311461 is a deficient number, since it is larger than the sum of its proper divisors (5339).

311461 is an equidigital number, since it uses as much as digits as its factorization.

311461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5338.

The product of its digits is 72, while the sum is 16.

The square root of 311461 is about 558.0869107944. The cubic root of 311461 is about 67.7851494466.

Adding to 311461 its reverse (164113), we get a palindrome (475574).

The spelling of 311461 in words is "three hundred eleven thousand, four hundred sixty-one".