211431402132 has 12 divisors (see below), whose sum is σ = 493339938336. Its totient is φ = 70477134040.

The previous prime is 211431402097. The next prime is 211431402163. The reversal of 211431402132 is 231204134112.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 8809641744 + ... + 8809641767.

It is an arithmetic number, because the mean of its divisors is an integer number (41111661528).

Almost surely, 2^211431402132 is an apocalyptic number.

It is an amenable number.

211431402132 is an abundant number, since it is smaller than the sum of its proper divisors (281908536204).

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

211431402132 is a wasteful number, since it uses less digits than its factorization.

211431402132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17619283518 (or 17619283516 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 211431402132 its reverse (231204134112), we get a palindrome (442635536244).

The spelling of 211431402132 in words is "two hundred eleven billion, four hundred thirty-one million, four hundred two thousand, one hundred thirty-two".