211404403400423 has 8 divisors (see below), whose sum is σ = 213326610380448. Its totient is φ = 209490720620544.

The previous prime is 211404403400419. The next prime is 211404403400471. The reversal of 211404403400423 is 324004304404112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211404403400423 - 2² = 211404403400419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211404403400423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211404403400413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2131000211 + ... + 2131099412.

It is an arithmetic number, because the mean of its divisors is an integer number (26665826297556).

Almost surely, 2^{211404403400423} is an apocalyptic number.

211404403400423 is a deficient number, since it is larger than the sum of its proper divisors (1922206980025).

211404403400423 is a wasteful number, since it uses less digits than its factorization.

211404403400423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262100073.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 211404403400423 its reverse (324004304404112), we get a palindrome (535408707804535).

The spelling of 211404403400423 in words is "two hundred eleven trillion, four hundred four billion, four hundred three million, four hundred thousand, four hundred twenty-three".