211423314420 has 72 divisors (see below), whose sum is σ = 653417744616. Its totient is φ = 55315782912.

The previous prime is 211423314383. The next prime is 211423314433. The reversal of 211423314420 is 24413324112.

211423314420 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 233 + 1 + 4 + 420 = 666.

211423314420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 23922190224 + 187501124196 = 154668^2 + 433014^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11071347 + ... + 11090426.

It is an arithmetic number, because the mean of its divisors is an integer number (9075246453).

Almost surely, 2^211423314420 is an apocalyptic number.

211423314420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211423314420 is an abundant number, since it is smaller than the sum of its proper divisors (441994430196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211423314420 is a wasteful number, since it uses less digits than its factorization.

211423314420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22161841 (or 22161836 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 211423314420 its reverse (24413324112), we get a palindrome (235836638532).

The spelling of 211423314420 in words is "two hundred eleven billion, four hundred twenty-three million, three hundred fourteen thousand, four hundred twenty".