421213311 has 16 divisors (see below), whose sum is σ = 629856000. Its totient is φ = 278182584.

The previous prime is 421213271. The next prime is 421213333. The reversal of 421213311 is 113312124.

421213311 is a `hidden beast` number, since 421 + 213 + 31 + 1 = 666.

It is not a de Polignac number, because 421213311 - 2⁷ = 421213183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421213411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70011 + ... + 75788.

It is an arithmetic number, because the mean of its divisors is an integer number (39366000).

Almost surely, 2^421213311 is an apocalyptic number.

421213311 is a deficient number, since it is larger than the sum of its proper divisors (208642689).

421213311 is a wasteful number, since it uses less digits than its factorization.

421213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145915 (or 145909 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 421213311 is about 20523.4819414250. The cubic root of 421213311 is about 749.6076828188.

Adding to 421213311 its reverse (113312124), we get a palindrome (534525435).

The spelling of 421213311 in words is "four hundred twenty-one million, two hundred thirteen thousand, three hundred eleven".