420030311 has 4 divisors (see below), whose sum is σ = 421788000. Its totient is φ = 418272624.

The previous prime is 420030307. The next prime is 420030313. The reversal of 420030311 is 113030024.

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 420030311 - 2² = 420030307 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 (420030313) 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, 878486 + ... + 878963.

It is an arithmetic number, because the mean of its divisors is an integer number (105447000).

Almost surely, 2^420030311 is an apocalyptic number.

420030311 is a deficient number, since it is larger than the sum of its proper divisors (1757689).

420030311 is a wasteful number, since it uses less digits than its factorization.

420030311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757688.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 420030311 is about 20494.6410312550. The cubic root of 420030311 is about 748.9052537814.

Adding to 420030311 its reverse (113030024), we get a palindrome (533060335).

The spelling of 420030311 in words is "four hundred twenty million, thirty thousand, three hundred eleven".