211255423 has 4 divisors (see below), whose sum is σ = 211287688. Its totient is φ = 211223160.

The previous prime is 211255399. The next prime is 211255439. The reversal of 211255423 is 324552112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211255423 - 2¹⁷ = 211124351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211255823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2433 + ... + 20698.

It is an arithmetic number, because the mean of its divisors is an integer number (52821922).

Almost surely, 2^211255423 is an apocalyptic number.

211255423 is a deficient number, since it is larger than the sum of its proper divisors (32265).

211255423 is an equidigital number, since it uses as much as digits as its factorization.

211255423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32264.

The product of its digits is 2400, while the sum is 25.

The square root of 211255423 is about 14534.6284094228. The cubic root of 211255423 is about 595.5743088415.

The spelling of 211255423 in words is "two hundred eleven million, two hundred fifty-five thousand, four hundred twenty-three".