420311 has 4 divisors (see below), whose sum is σ = 421800. Its totient is φ = 418824.

The previous prime is 420307. The next prime is 420313. The reversal of 420311 is 113024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420311 - 2² = 420307 is a prime.

It is a super-2 number, since 2×420311² = 353322673442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420292 and 420301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420313) 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, 176 + ... + 933.

It is an arithmetic number, because the mean of its divisors is an integer number (105450).

2⁴²⁰³¹¹ is an apocalyptic number.

420311 is a deficient number, since it is larger than the sum of its proper divisors (1489).

420311 is a wasteful number, since it uses less digits than its factorization.

420311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 420311 is about 648.3139671486. The cubic root of 420311 is about 74.9072037506.

Adding to 420311 its reverse (113024), we get a palindrome (533335).

The spelling of 420311 in words is "four hundred twenty thousand, three hundred eleven", and thus it is an iban number.