211140424 has 16 divisors (see below), whose sum is σ = 431878320. Its totient is φ = 95972880.

The previous prime is 211140343. The next prime is 211140451. The reversal of 211140424 is 424041112.

211140424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199574 + ... + 1199749.

It is an arithmetic number, because the mean of its divisors is an integer number (26992395).

Almost surely, 2^211140424 is an apocalyptic number.

It is an amenable number.

211140424 is an abundant number, since it is smaller than the sum of its proper divisors (220737896).

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

211140424 is a wasteful number, since it uses less digits than its factorization.

211140424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399340 (or 2399336 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 211140424 is about 14530.6718358099. The cubic root of 211140424 is about 595.4662202845.

Adding to 211140424 its reverse (424041112), we get a palindrome (635181536).

The spelling of 211140424 in words is "two hundred eleven million, one hundred forty thousand, four hundred twenty-four".