211140041 has 4 divisors (see below), whose sum is σ = 241302912. Its totient is φ = 180977172.

The previous prime is 211140031. The next prime is 211140049. The reversal of 211140041 is 140041112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211140041 - 2¹⁰ = 211139017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211139998 and 211140025.

It is not an unprimeable number, because it can be changed into a prime (211140049) 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, 15081425 + ... + 15081438.

It is an arithmetic number, because the mean of its divisors is an integer number (60325728).

Almost surely, 2^211140041 is an apocalyptic number.

It is an amenable number.

211140041 is a deficient number, since it is larger than the sum of its proper divisors (30162871).

211140041 is an equidigital number, since it uses as much as digits as its factorization.

211140041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30162870.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 211140041 is about 14530.6586567850. The cubic root of 211140041 is about 595.4658602339.

Adding to 211140041 its reverse (140041112), we get a palindrome (351181153).

The spelling of 211140041 in words is "two hundred eleven million, one hundred forty thousand, forty-one".