2181130 has 16 divisors (see below), whose sum is σ = 4487040. Its totient is φ = 747792.

The previous prime is 2181097. The next prime is 2181131. The reversal of 2181130 is 311812.

It is not an unprimeable number, because it can be changed into a prime (2181131) 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, 15510 + ... + 15649.

It is an arithmetic number, because the mean of its divisors is an integer number (280440).

2^2181130 is an apocalyptic number.

2181130 is an abundant number, since it is smaller than the sum of its proper divisors (2305910).

2181130 is a wasteful number, since it uses less digits than its factorization.

2181130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31173.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2181130 is about 1476.8649227333. The cubic root of 2181130 is about 129.6862255161.

Adding to 2181130 its reverse (311812), we get a palindrome (2492942).

The spelling of 2181130 in words is "two million, one hundred eighty-one thousand, one hundred thirty".