211223453 has 24 divisors (see below), whose sum is σ = 258056832. Its totient is φ = 169323264.

The previous prime is 211223413. The next prime is 211223471. The reversal of 211223453 is 354322112.

211223453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211223453 - 2¹⁴ = 211207069 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 (211223413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 531851 + ... + 532247.

It is an arithmetic number, because the mean of its divisors is an integer number (10752368).

Almost surely, 2^211223453 is an apocalyptic number.

It is an amenable number.

211223453 is a deficient number, since it is larger than the sum of its proper divisors (46833379).

211223453 is a wasteful number, since it uses less digits than its factorization.

211223453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 684 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 211223453 is about 14533.5285804928. The cubic root of 211223453 is about 595.5442638989.

Adding to 211223453 its reverse (354322112), we get a palindrome (565545565).

The spelling of 211223453 in words is "two hundred eleven million, two hundred twenty-three thousand, four hundred fifty-three".