420330311 has 4 divisors (see below), whose sum is σ = 420649824. Its totient is φ = 420010800.

The previous prime is 420330307. The next prime is 420330349. The reversal of 420330311 is 113033024.

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 420330311 - 2² = 420330307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420330311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420330371) 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, 157775 + ... + 160416.

It is an arithmetic number, because the mean of its divisors is an integer number (105162456).

Almost surely, 2^420330311 is an apocalyptic number.

420330311 is a deficient number, since it is larger than the sum of its proper divisors (319513).

420330311 is a wasteful number, since it uses less digits than its factorization.

420330311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319512.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 420330311 is about 20501.9587113037. The cubic root of 420330311 is about 749.0835092565.

Adding to 420330311 its reverse (113033024), we get a palindrome (533363335).

The spelling of 420330311 in words is "four hundred twenty million, three hundred thirty thousand, three hundred eleven".