420020311 has 8 divisors (see below), whose sum is σ = 435052800. Its totient is φ = 405024480.

The previous prime is 420020297. The next prime is 420020329. The reversal of 420020311 is 113020024.

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

It is a cyclic number.

It is not a de Polignac number, because 420020311 - 2¹⁵ = 419987543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420020291 and 420020300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420020911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15306 + ... + 32776.

It is an arithmetic number, because the mean of its divisors is an integer number (54381600).

Almost surely, 2^420020311 is an apocalyptic number.

420020311 is a deficient number, since it is larger than the sum of its proper divisors (15032489).

420020311 is a wasteful number, since it uses less digits than its factorization.

420020311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18329.

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

The square root of 420020311 is about 20494.3970635879. The cubic root of 420020311 is about 748.8993104707.

Adding to 420020311 its reverse (113020024), we get a palindrome (533040335).

The spelling of 420020311 in words is "four hundred twenty million, twenty thousand, three hundred eleven".