404311 has 6 divisors (see below), whose sum is σ = 429800. Its totient is φ = 380256.

The previous prime is 404309. The next prime is 404321. The reversal of 404311 is 113404.

It is not a de Polignac number, because 404311 - 2¹ = 404309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404291 and 404300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411 + ... + 988.

2⁴⁰⁴³¹¹ is an apocalyptic number.

404311 is a deficient number, since it is larger than the sum of its proper divisors (25489).

404311 is a wasteful number, since it uses less digits than its factorization.

404311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 404311 is about 635.8545431150. The cubic root of 404311 is about 73.9443823627.

Adding to 404311 its reverse (113404), we get a palindrome (517715).

The spelling of 404311 in words is "four hundred four thousand, three hundred eleven", and thus it is an iban number.