420220311 has 8 divisors (see below), whose sum is σ = 640335744. Its totient is φ = 240125880.

The previous prime is 420220303. The next prime is 420220313. The reversal of 420220311 is 113022024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420220311 - 2³ = 420220303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420220313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10005225 + ... + 10005266.

It is an arithmetic number, because the mean of its divisors is an integer number (80041968).

Almost surely, 2^420220311 is an apocalyptic number.

420220311 is a deficient number, since it is larger than the sum of its proper divisors (220115433).

420220311 is a wasteful number, since it uses less digits than its factorization.

420220311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010501.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 420220311 is about 20499.2758652592. The cubic root of 420220311 is about 749.0181587668.

Adding to 420220311 its reverse (113022024), we get a palindrome (533242335).

The spelling of 420220311 in words is "four hundred twenty million, two hundred twenty thousand, three hundred eleven".