211113456 has 20 divisors (see below), whose sum is σ = 545376552. Its totient is φ = 70371136.

The previous prime is 211113451. The next prime is 211113467. The reversal of 211113456 is 654311112.

It is a happy number.

211113456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211113451) 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, 2199051 + ... + 2199146.

Almost surely, 2^211113456 is an apocalyptic number.

It is an amenable number.

211113456 is an abundant number, since it is smaller than the sum of its proper divisors (334263096).

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

211113456 is a wasteful number, since it uses less digits than its factorization.

211113456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398208 (or 4398202 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 211113456 is about 14529.7438380723. The cubic root of 211113456 is about 595.4408671467.

Adding to 211113456 its reverse (654311112), we get a palindrome (865424568).

The spelling of 211113456 in words is "two hundred eleven million, one hundred thirteen thousand, four hundred fifty-six".