211471323420 has 96 divisors (see below), whose sum is σ = 691106347008. Its totient is φ = 47307866112.

The previous prime is 211471323419. The next prime is 211471323451. The reversal of 211471323420 is 24323174112.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5336677 + ... + 5376156.

It is an arithmetic number, because the mean of its divisors is an integer number (7199024448).

Almost surely, 2^211471323420 is an apocalyptic number.

211471323420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211471323420 is an abundant number, since it is smaller than the sum of its proper divisors (479635023588).

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

211471323420 is a wasteful number, since it uses less digits than its factorization.

211471323420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712899 (or 10712897 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 211471323420 its reverse (24323174112), we get a palindrome (235794497532).

The spelling of 211471323420 in words is "two hundred eleven billion, four hundred seventy-one million, three hundred twenty-three thousand, four hundred twenty".