211420231040 has 32 divisors (see below), whose sum is σ = 505426491360. Its totient is φ = 84568092160.

The previous prime is 211420231031. The next prime is 211420231069. The reversal of 211420231040 is 40132024112.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165171416 + ... + 165172695.

It is an arithmetic number, because the mean of its divisors is an integer number (15794577855).

Almost surely, 2^211420231040 is an apocalyptic number.

211420231040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211420231040 is an abundant number, since it is smaller than the sum of its proper divisors (294006260320).

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

211420231040 is an equidigital number, since it uses as much as digits as its factorization.

211420231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330344130 (or 330344118 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 211420231040 its reverse (40132024112), we get a palindrome (251552255152).

The spelling of 211420231040 in words is "two hundred eleven billion, four hundred twenty million, two hundred thirty-one thousand, forty".