211040144 has 40 divisors (see below), whose sum is σ = 491903040. Its totient is φ = 85684608.

The previous prime is 211040131. The next prime is 211040149. The reversal of 211040144 is 441040112.

It is not an unprimeable number, because it can be changed into a prime (211040149) 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, 47459 + ... + 51714.

It is an arithmetic number, because the mean of its divisors is an integer number (12297576).

Almost surely, 2^211040144 is an apocalyptic number.

It is an amenable number.

211040144 is an abundant number, since it is smaller than the sum of its proper divisors (280862896).

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

211040144 is a wasteful number, since it uses less digits than its factorization.

211040144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99207 (or 99201 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 211040144 is about 14527.2207940817. The cubic root of 211040144 is about 595.3719342047.

Adding to 211040144 its reverse (441040112), we get a palindrome (652080256).

The spelling of 211040144 in words is "two hundred eleven million, forty thousand, one hundred forty-four".