211131105 has 16 divisors (see below), whose sum is σ = 338022720. Its totient is φ = 112532288.

The previous prime is 211131101. The next prime is 211131119. The reversal of 211131105 is 501131112.

211131105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 211131105 - 2² = 211131101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (211131101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27634 + ... + 34436.

It is an arithmetic number, because the mean of its divisors is an integer number (21126420).

Almost surely, 2^211131105 is an apocalyptic number.

It is an amenable number.

211131105 is a deficient number, since it is larger than the sum of its proper divisors (126891615).

211131105 is a wasteful number, since it uses less digits than its factorization.

211131105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 211131105 is about 14530.3511657496. The cubic root of 211131105 is about 595.4574595567.

Adding to 211131105 its reverse (501131112), we get a palindrome (712262217).

The spelling of 211131105 in words is "two hundred eleven million, one hundred thirty-one thousand, one hundred five".